Common Weakness Enumeration

CWE-367

Allowed

Time-of-check Time-of-use (TOCTOU) Race Condition

Abstraction: Base · Status: Incomplete

The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.

1342 vulnerabilities reference this CWE, most recent first.

CVE-2026-108741 (GCVE-0-2026-108741)

Vulnerability from cvelistv5 – Published: 2026-10-11 12:19 – Updated: 2026-10-11 12:19
VLAI
Title
Shepherd through 0.3.1 SSRF via DNS Rebinding in Citation Checker
Summary
Shepherd (shepherd-ai) through 0.3.1 contains a server-side request forgery guard bypass in the citation-checker extra because the public_url guard validates a resolved address but fetch re-resolves the hostname at connect time. Attackers who plant a crafted reference URL in a checked document and control its DNS can rebind it to internal addresses, sending GET requests to internal HTTP(S) services and capturing responses in evidence files.
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 5683 records in the last 180 days details
Impacted products
Vendor Product Version
shepherd-agents Shepherd Affected: 0 , ≤ 0.3.1 (semver)
Create a notification for this product.
Date Public
2026-10-10 00:00
Show details on NVD website

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CVE-2026-108698 (GCVE-0-2026-108698)

Vulnerability from cvelistv5 – Published: 2026-10-11 13:25 – Updated: 2026-10-11 13:25
VLAI
Title
hyper-mcp through 0.8.3 OCI Plugin Signature Verification TOCTOU Race Condition
Summary
hyper-mcp through 0.8.3 contains a signature verification bypass vulnerability in load_wasm in src/wasm/oci.rs that verifies the Cosign signature of a separately resolved tag rather than the loaded manifest. Attackers controlling registry responses for the tag can serve an unsigned malicious manifest to the loader and a signed one to Cosign, executing unsigned WebAssembly plugins with configured host capabilities.
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 5683 records in the last 180 days details
Impacted products
Vendor Product Version
hyper-mcp-rs hyper-mcp Affected: 0 , ≤ 0.8.3 (semver)
Create a notification for this product.
Date Public
2026-10-11 00:00
Show details on NVD website

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CVE-2026-108361 (GCVE-0-2026-108361)

Vulnerability from cvelistv5 – Published: 2026-10-12 19:06 – Updated: 2026-10-12 19:06
VLAI
Title
Privasys Intra-handshake attested TLS implementation is vulnerable to TOCTOU Attacks
Summary
Privasys Remote Attestation TLS Clients provides multi-language utilities for verifying attested TLS connections. Before 0.9.1, an attacker with local access could modify workload code, data, and configuration at any time after successful connection establishment. Once Evidence was successfully appraised and the connection was established, there was a window of vulnerability from the establishment of the connection to the termination of the connection where an attacker could modify the state of the workload and platform at runtime on the TLS endpoint acting as the Attester. This vulnerability was possible because Privasys/ra-tls-clients performed attestation only once in the lifetime of the connection (at connection establishment time), and the verifying peer continued to believe that the state was the same as in the initial Evidence throughout, whereas it could be stale at some point in time. This vulnerability is fixed in 0.9.1.
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7553 records in the last 180 days details
Impacted products
Vendor Product Version
Privasys ra-tls-clients Affected: < 0.9.1
Create a notification for this product.
Show details on NVD website

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CVE-2026-107276 (GCVE-0-2026-107276)

Vulnerability from cvelistv5 – Published: 2026-10-07 15:36 – Updated: 2026-10-07 20:28
VLAI
Title
MISP Email OTP Race Condition Allows One-Time Password to Be Consumed by Multiple Concurrent Requests
Summary
MISP contains a race condition in the email-based one-time password (OTP) login flow. When two HTTP requests carrying the same valid OTP are submitted concurrently, both can successfully authenticate and establish a session. The root cause is that the OTP value is read from the shared store, validated, and then deleted in separate non-atomic steps, allowing a second in-flight request to read the same value before the first request's deletion takes effect. Preconditions: - The target MISP instance has email OTP login enabled. - The attacker possesses a valid, unexpired OTP (e.g., via email interception or social engineering). - The attacker can issue two HTTP POST requests in close temporal proximity. Impact: - The one-time-use guarantee of the OTP is violated; a single code can yield two authenticated sessions. - This weakens the authentication control and may facilitate unauthorized access if the OTP is shared or intercepted. Affected versions: <2.5.48
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
Supplier · CIRCL (v2.0.3)
Decision recorded 2026-10-07 15:34 UTC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 20:28 UTC
CWE
  • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
CIRCL CNA under the ENISA root
CNA scorecard B 90/100 over 235 records in the last 180 days details
References
Impacted products
Vendor Product Version
MISP MISP Affected: 0 , < 2.5.48 (semver)
    cpe:2.3:a:misp:misp:*:*:*:*:*:*:*:*
Create a notification for this product.
GCVE extensions
bcp-05-x-01
AI-assisted vulnerability information annotation
GCVE-BCP-05-X-01
Whole record AI-generated Human-reviewed GNA-1

Draft vulnerability metadata was generated from a git-format patch using an Ollama-hosted language model. Human validation is required before publication.

ai-computer-assisted:llm-generatedai-computer-assisted:classification
Model Source Identifier
qwen3.8:27b ollama qwen3.8:27b
bcp-05-x-02
Patch-to-vulnerability generation provenance
GCVE-BCP-05-X-02
Generator
patch2vuln.py on 2026-10-07 15:34
Model
qwen3.8:27b
Input
https://github.com/MISP/MISP/commit/ba95e67d5.patch 810e97a648a3…
Confidence
medium
Commit Subject Patch SHA-256
ba95e67d545e fix: [login] Let only one request spend an e-mailed OTP 810e97a648a3…
Fix summary

The fix makes OTP consumption atomic by moving the deletion of the OTP from the shared store into the validation condition itself. The return value of the delete operation (1 if the key was actually removed, 0 otherwise) is now part of the success check, so only the request that successfully removes the OTP from the store is permitted to proceed with login. A session-state cleanup call was also added to remove the OTP user reference from the session.

Patch summary

In UsersController::email_otp(), the $redis->del() call was moved from after the hash_equals comparison into the if-condition as an additional conjunct. The condition now requires $redis->del('misp:otp:' . $user_id) === 1, meaning only the request whose delete actually removed the key (returning 1) can proceed to Auth->login(). A $this->Session->delete('email_otp_user') call was added before the login step to clean up session state. Net change: 6 insertions, 3 deletions in one file.

CVSS rationale

AV:N: Exploitation occurs over the network via HTTP POST. AC:H: Exploiting the race condition requires precise timing of two concurrent requests so both read the OTP before either deletes it; this is non-trivial to achieve reliably. AT:N: No data corruption or manipulation is required. PR:N: The attacker does not need prior authentication to MISP; they only need possession of a valid OTP (e.g., intercepted email). UI:N: No victim interaction beyond the initial login flow is needed. VC:N: No direct confidentiality loss of system data. VI:L: The one-time-use property of the OTP is violated, allowing a second authenticated session. VA:N: No availability impact. SC/SI:L: Limited integrity impact on the authentication process; no cross-system impact. SA:N: No impact on security authority.

Weakness rationale
  • CWE-362 The OTP stored in Redis is a shared resource accessed by concurrent HTTP requests. The original code performed read, compare, and delete as separate non-atomic operations, allowing two concurrent requests to both read and validate the same OTP before either deletes it. This is a textbook race condition on a shared resource.
  • CWE-367 The check (reading and comparing the OTP) and the use (logging in) are separated in time, and the state (OTP presence in the store) can change between the two steps due to a concurrent request. This is a TOCTOU variant of the race condition.
Attack pattern rationale
  • CAPEC-111 The attack pattern involves an adversary issuing two or more concurrent requests to exploit a non-atomic check-and-use sequence on a shared resource (the OTP in Redis). CAPEC-111 directly describes exploiting timing dependencies between sub-processes. This is the closest CAPEC to the observed vulnerability; no more specific CAPEC for OTP replay via race condition exists in the CAPEC catalog.
Assumptions to verify
  • The exact affected version range is not explicitly stated in the patch; the tag boundary v2.5.48 with 39 commits after the fix suggests the fix landed shortly after that tag, but the precise first-fixed version is unconfirmed.
  • The CAPEC-111 mapping is the closest available; no CAPEC specifically covers OTP replay via race condition, so this is the best-fit pattern.
  • CVSS AC:H assumes the race window is narrow and requires precise timing; if the Redis round-trip latency is large, exploitation may be easier, but no evidence supports lowering AC.
  • The commit message states the issue was 'found during the internal review, not externally reported,' but no specific individual is named as finder, so no finder credit is assigned.
  • PR:N assumes the attacker obtains the OTP through out-of-band means (email interception); if MISP requires prior authentication to request an OTP, PR could be L.
Model comparison

Selected qwen3.8:27b by deterministic-consensus-v1
The selected result is closest to model consensus; this heuristic does not establish factual correctness and human review remains required.

Model Score Agreement Confidence Assumptions
qwen3.8:27b 7 11 medium 5
bcp-05-x-03
Vulnerability handling and disclosure timeline
GCVE-BCP-05-X-03
  1. 2026-09-23 14:26 UTC Fix developed Corrective change authored (ba95e67d545efa313435ae39dd481879d72e72e6): fix: [login] Let only one request spend an e-mailed OTP https://github.com/MISP/MISP/commit/ba95e67d5.patch
Show details on NVD website

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        "title": "CISA ADP Vulnrichment"
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              "value": "\u003cp\u003eMISP contains a race condition in the email-based one-time password (OTP) login flow. When two HTTP requests carrying the same valid OTP are submitted concurrently, both can successfully authenticate and establish a session. The root cause is that the OTP value is read from the shared store, validated, and then deleted in separate non-atomic steps, allowing a second in-flight request to read the same value before the first request\u0027s deletion takes effect.\u003c/p\u003e\u003cp\u003ePreconditions:\u003c/p\u003e\u003cp\u003e- The target MISP instance has email OTP login enabled.\u003c/p\u003e\u003cp\u003e- The attacker possesses a valid, unexpired OTP (e.g., via email interception or social engineering).\u003c/p\u003e\u003cp\u003e- The attacker can issue two HTTP POST requests in close temporal proximity.\u003c/p\u003e\u003cp\u003eImpact:\u003c/p\u003e\u003cp\u003e- The one-time-use guarantee of the OTP is violated; a single code can yield two authenticated sessions.\u003c/p\u003e\u003cp\u003e- This weakens the authentication control and may facilitate unauthorized access if the OTP is shared or intercepted.\u003c/p\u003e\u003cp\u003eAffected versions: \u0026lt;2.5.48\u003c/p\u003e"
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              "value": "\u003cp\u003eThe fix makes OTP consumption atomic by moving the deletion of the OTP from the shared store into the validation condition itself. The return value of the delete operation (1 if the key was actually removed, 0 otherwise) is now part of the success check, so only the request that successfully removes the OTP from the store is permitted to proceed with login. A session-state cleanup call was also added to remove the OTP user reference from the session.\u003c/p\u003e"
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      ],
      "title": "MISP Email OTP Race Condition Allows One-Time Password to Be Consumed by Multiple Concurrent Requests",
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          "extensions": {
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                  "The CAPEC-111 mapping is the closest available; no CAPEC specifically covers OTP replay via race condition, so this is the best-fit pattern.",
                  "CVSS AC:H assumes the race window is narrow and requires precise timing; if the Redis round-trip latency is large, exploitation may be easier, but no evidence supports lowering AC.",
                  "The commit message states the issue was \u0027found during the internal review, not externally reported,\u0027 but no specific individual is named as finder, so no finder credit is assigned.",
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                "patchSummary": "In UsersController::email_otp(), the $redis-\u003edel() call was moved from after the hash_equals comparison into the if-condition as an additional conjunct. The condition now requires $redis-\u003edel(\u0027misp:otp:\u0027 . $user_id) === 1, meaning only the request whose delete actually removed the key (returning 1) can proceed to Auth-\u003elogin(). A $this-\u003eSession-\u003edelete(\u0027email_otp_user\u0027) call was added before the login step to clean up session state. Net change: 6 insertions, 3 deletions in one file.",
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CVE-2026-106451 (GCVE-0-2026-106451)

Vulnerability from cvelistv5 – Published: 2026-10-06 19:50 – Updated: 2026-10-07 18:26
VLAI
Title
yawkat LZ4 Java: Native library extraction to a shared temporary directory is vulnerable to file replacement by another local user
Summary
yawkat LZ4 Java provides LZ4 compression for Java. From 1.7.0 until 1.11.4, net.jpountz.util.Native.load() uses File.createTempFile to create an exclusive temporary .lck file but derives the native-library path by removing the suffix, then FileOutputStream opens that predictable path without exclusive creation, allowing another local user with access to the same shared temporary directory to create or replace the library file before System.load() uses it. Successful exploitation depends on shared-directory permissions, host protections, and winning the race, and can execute native code as the victim; hardened systems may instead cause library loading to fail and fall back to Java implementations. Configurations using a system library, a private java.io.tmpdir, or Java-only implementations are not affected. This issue is fixed in version 1.11.4.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 18:25 UTC
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
  • CWE-377 - Insecure Temporary File
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7553 records in the last 180 days details
Impacted products
Vendor Product Version
yawkat lz4-java Affected: < 1.11.4
Create a notification for this product.
Show details on NVD website

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CVE-2026-105743 (GCVE-0-2026-105743)

Vulnerability from cvelistv5 – Published: 2026-10-05 21:23 – Updated: 2026-10-08 02:28
VLAI
Title
Docling: SSRF guard bypass in remote resource fetching (DNS rebinding / multi-record resolution; no IP validation in HTML render mode)
Summary
Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.91.0 until 2.132.0, validate_url_safety in docling/backend/utils/image_resource_loader.py validates a hostname with a single IPv4 lookup and then allows the HTTP client to resolve and parse the original URL again, permitting DNS rebinding, mixed public and internal address records, and backslash authority parser disagreement to reach internal services. HTMLBackendOptions(render_page=True) also allows HTTP and HTTPS browser requests without validating their resolved destination. Exploitation requires remote fetching to be enabled, and response content is exposed only when it is decoded as an image or passively rendered in a page screenshot. This issue is fixed in 2.132.0.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 02:28 UTC
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7553 records in the last 180 days details
Impacted products
Vendor Product Version
docling-project docling Affected: >= 2.91.0, < 2.132.0
Create a notification for this product.
docling-project docling-slim Affected: >= 2.91.0, < 2.132.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-105647 (GCVE-0-2026-105647)

Vulnerability from cvelistv5 – Published: 2026-10-05 19:01 – Updated: 2026-10-05 19:52
VLAI
Title
Ghost: Server-Side Request Forgery in Bookmark Fetching
Summary
Ghost is a Node.js content management system. From 6.54.1 until 6.65.0, a validation issue allowed some functionality, such as Webmentions, to be abused by an unauthenticated user to make limited HTTP requests to hosts in the Ghost server's internal network. A successful attack would not result in any response data being returned. This issue is fixed in version 6.65.0.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 19:52 UTC
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7553 records in the last 180 days details
Impacted products
Vendor Product Version
TryGhost Ghost Affected: >= 6.54.1, < 6.65.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-105163 (GCVE-0-2026-105163)

Vulnerability from cvelistv5 – Published: 2026-10-04 21:30 – Updated: 2026-10-05 15:11 X_Open Source
VLAI
Title
crossplane crossplane-runtime ImageConfig client.go Get toctou
Summary
A vulnerability was detected in crossplane crossplane-runtime up to 2.2.2/2.3.2. This vulnerability affects the function Get of the file pkg/xpkg/client.go of the component ImageConfig. The manipulation results in time-of-check time-of-use. The attack may be launched remotely. Upgrading to version 2.2.3, 2.3.3 and 2.4.0-rc.1 is able to resolve this issue. The patch is identified as bee99c6cd6ca81878acca2940a2f0a02169fc208. You should upgrade the affected component.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 15:10 UTC
CWE
Assigner
VulDB CNA under the mitre root
CNA scorecard B 82/100 over 3796 records in the last 180 days details
Impacted products
Vendor Product Version
crossplane crossplane-runtime Affected: 2.2.0
Affected: 2.2.1
Affected: 2.2.2
Affected: 2.3.0
Affected: 2.3.1
Affected: 2.3.2
Unaffected: 2.2.3
Unaffected: 2.3.3
Unaffected: 2.4.0-rc.1
    cpe:2.3:a:crossplane:crossplane-runtime:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-105130 (GCVE-0-2026-105130)

Vulnerability from cvelistv5 – Published: 2026-10-03 23:40 – Updated: 2026-10-05 16:14
VLAI
Title
LaraDashboard 1.4.0 before 1.4.8 Race Condition Bypasses Per-IP Registration Limit
Summary
LaraDashboard from 1.4.0 before 1.4.8 contains a race condition vulnerability in RegisterController::register that allows unauthenticated attackers to bypass the per-IP daily registration limit. Attackers can send many concurrent registration requests from one IP so all pass RegistrationGuardService::hasExceededIpLimit before recordRegistration runs, creating accounts in bulk and defeating anti-automation controls.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 16:11 UTC
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 5683 records in the last 180 days details
Impacted products
Vendor Product Version
laradashboard laradashboard Affected: 1.4.0 , < 1.4.8 (semver)
Unaffected: 1.4.8 (semver)
    cpe:2.3:a:laradashboard:lara_dashboard:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-30 00:00
Credits
Show details on NVD website

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CVE-2026-104474 (GCVE-0-2026-104474)

Vulnerability from cvelistv5 – Published: 2026-10-02 23:28 – Updated: 2026-10-05 14:50
VLAI
Title
OpenLiteSpeed before 1.9.3 Local Privilege Escalation via lsup.sh Auto-Update
Summary
OpenLiteSpeed before 1.9.3 contains a local privilege escalation vulnerability in admin/misc/lsup.sh that runs unverified update packages from a nobody-writable directory as root. Attackers controlling the nobody web process can replace the package in /usr/local/lsws/autoupdate/ before extraction, so its install.sh runs as root on the next update.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 14:49 UTC
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 5683 records in the last 180 days details
Impacted products
Vendor Product Version
litespeedtech openlitespeed Affected: 0 , < 1.9.3 (semver)
Unaffected: 1.9.3 (semver)
    cpe:2.3:a:litespeedtech:openlitespeed:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-29 00:00
Show details on NVD website

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Mitigation
Implementation

The most basic advice for TOCTOU vulnerabilities is to not perform a check before the use. This does not resolve the underlying issue of the execution of a function on a resource whose state and identity cannot be assured, but it does help to limit the false sense of security given by the check.

Mitigation
Implementation

When the file being altered is owned by the current user and group, set the effective gid and uid to that of the current user and group when executing this statement.

Mitigation
Architecture and Design

Limit the interleaving of operations on files from multiple processes.

Mitigation
Implementation Architecture and Design

If you cannot perform operations atomically and you must share access to the resource between multiple processes or threads, then try to limit the amount of time (CPU cycles) between the check and use of the resource. This will not fix the problem, but it could make it more difficult for an attack to succeed.

Mitigation
Implementation

Recheck the resource after the use call to verify that the action was taken appropriately.

Mitigation
Architecture and Design

Ensure that some environmental locking mechanism can be used to protect resources effectively.

Mitigation
Implementation

Ensure that locking occurs before the check, as opposed to afterwards, such that the resource, as checked, is the same as it is when in use.

CAPEC-27: Leveraging Race Conditions via Symbolic Links

This attack leverages the use of symbolic links (Symlinks) in order to write to sensitive files. An attacker can create a Symlink link to a target file not otherwise accessible to them. When the privileged program tries to create a temporary file with the same name as the Symlink link, it will actually write to the target file pointed to by the attackers' Symlink link. If the attacker can insert malicious content in the temporary file they will be writing to the sensitive file by using the Symlink. The race occurs because the system checks if the temporary file exists, then creates the file. The attacker would typically create the Symlink during the interval between the check and the creation of the temporary file.

CAPEC-29: Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions

This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. A typical example is file access. The adversary can leverage a file access race condition by "running the race", meaning that they would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the adversary could replace or modify the file, causing the application to behave unexpectedly.