Common Weakness Enumeration
CWE-203
AllowedObservable Discrepancy
Abstraction: Base · Status: Incomplete
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.
885 vulnerabilities reference this CWE, most recent first.
CVE-2026-58503 (GCVE-0-2026-58503)
Vulnerability from cvelistv5 – Published: 2026-07-10 21:12 – Updated: 2026-07-13 18:55
VLAI
EPSS
VEX
Title
Frappe: Unauthenticated User Enumeration via reset_password
Summary
Frappe is a full-stack web application framework. Prior to 16.16.0 and 15.106.0, user enumeration could be performed via the reset_password endpoint. This issue is fixed in versions 16.16.0 and 15.106.0.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-13 18:35 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/frappe/frappe/security/advisor… | x_refsource_CONFIRM |
| https://github.com/frappe/frappe/pull/38625 | x_refsource_MISC |
| https://github.com/frappe/frappe/pull/38626 | x_refsource_MISC |
| https://github.com/frappe/frappe/commit/1ff64d4a6… | x_refsource_MISC |
| https://github.com/frappe/frappe/commit/d3becf567… | x_refsource_MISC |
| https://github.com/frappe/frappe/releases/tag/v15.106.0 | x_refsource_MISC |
| https://github.com/frappe/frappe/releases/tag/v16.16.0 | x_refsource_MISC |
Impacted products
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CVE-2026-58445 (GCVE-0-2026-58445)
Vulnerability from cvelistv5 – Published: 2026-08-13 16:44 – Updated: 2026-08-14 19:08
VLAI
EPSS
VEX
Title
Cross-repository label-ID enumeration oracle via unscoped DeleteIssueLabel API
Summary
Cross-repository label-ID enumeration oracle via unscoped DeleteIssueLabel API
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 19:07 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/go-gitea/gitea/security/adviso… | vendor-advisory |
| https://github.com/go-gitea/gitea/releases/tag/v1.27.0 | release-notes |
| https://blog.gitea.com/gitea-1.27.0-is-released/ | release-notes |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Gitea | Gitea Open Source Git Server |
Affected:
0 , ≤ 1.26.4
(semver)
|
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CVE-2026-56339 (GCVE-0-2026-56339)
Vulnerability from cvelistv5 – Published: 2026-07-15 11:25 – Updated: 2026-07-15 18:38
VLAI
EPSS
VEX
Title
Capgo - Unauthenticated Organization Existence Enumeration via rescind_invitation RPC
Summary
Capgo (Cap-go/capgo) before 12.128.2 contains an information disclosure vulnerability in the Supabase PostgREST SECURITY DEFINER RPC function public.rescind_invitation that allows unauthenticated attackers to enumerate organization existence. The function returns distinct error messages (NO_ORG vs NO_RIGHTS) when called with only a publishable API key, enabling attackers to discover valid organization IDs and increase the attack surface for targeted phishing or social engineering campaigns.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 18:34 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Cap-go/capgo/security/advisori… | vendor-advisory |
| https://www.vulncheck.com/advisories/capgo-unauth… | third-party-advisory |
Impacted products
Date Public
2026-03-17 00:00
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CVE-2026-56327 (GCVE-0-2026-56327)
Vulnerability from cvelistv5 – Published: 2026-06-30 22:08 – Updated: 2026-07-01 13:19
VLAI
EPSS
VEX
Title
Capgo - Unauthenticated Organization Existence Oracle via public.invite_user_to_org RPC
Summary
Capgo before 12.128.2 contains an information disclosure vulnerability in the public.invite_user_to_org RPC function that allows unauthenticated attackers to enumerate organization existence by observing distinct error responses. Attackers can call the SECURITY DEFINER function with a publishable API key to determine if an organization ID exists based on NO_ORG versus NO_RIGHTS responses, enabling tenant enumeration attacks.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-01 13:17 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Cap-go/capgo/security/advisori… | vendor-advisory |
| https://www.vulncheck.com/advisories/capgo-unauth… | third-party-advisory |
Impacted products
Date Public
2026-03-17 00:00
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CVE-2026-56319 (GCVE-0-2026-56319)
Vulnerability from cvelistv5 – Published: 2026-06-20 15:24 – Updated: 2026-06-22 13:47
VLAI
EPSS
VEX
Title
Capgo - App Existence Oracle via GET /statistics/app/:app_id
Summary
Capgo before 12.128.2 contains an information disclosure vulnerability in the GET /statistics/app/:app_id endpoint that allows app-limited API keys to distinguish existing sibling app IDs through differential error responses. Attackers can enumerate real app IDs outside their allowed scope by observing 500 PGRST116 errors for inaccessible apps versus 401 errors for nonexistent apps, breaking tenant isolation.
Severity
4.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-22 13:46 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Cap-go/capgo/security/advisori… | vendor-advisory |
| https://www.vulncheck.com/advisories/capgo-app-ex… | third-party-advisory |
Impacted products
Date Public
2026-05-07 00:00
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CVE-2026-56316 (GCVE-0-2026-56316)
Vulnerability from cvelistv5 – Published: 2026-06-21 13:26 – Updated: 2026-06-24 17:56
VLAI
EPSS
VEX
Title
Cap-go - Job Existence Oracle via Unauthenticated OPTIONS /build/upload/:jobId/*
Summary
Cap-go before 12.128.2 contains an information disclosure vulnerability in the OPTIONS /build/upload/:jobId/* endpoint that allows unauthenticated attackers to enumerate valid builder job IDs through observable response discrepancies. Attackers can probe the endpoint without authentication to distinguish valid job IDs from invalid ones and generate sustained unauthenticated traffic for resource consumption.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-24 17:56 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Cap-go/capgo/security/advisori… | vendor-advisory |
| https://www.vulncheck.com/advisories/cap-go-job-e… | third-party-advisory |
Impacted products
Date Public
2026-03-03 00:00
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CVE-2026-56296 (GCVE-0-2026-56296)
Vulnerability from cvelistv5 – Published: 2026-07-11 13:00 – Updated: 2026-07-13 15:19
VLAI
EPSS
VEX
Title
Cap-go - App Existence Oracle via Unauthenticated transfer_app RPC
Summary
Cap-go before 12.128.2 contains an information disclosure vulnerability in the public.transfer_app RPC function that returns distinct error messages for existing versus non-existing app IDs. Unauthenticated attackers can enumerate valid app IDs by observing error message differences when calling transfer_app with only the publishable API key.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-13 15:19 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Cap-go/capgo/security/advisori… | vendor-advisory |
| https://www.vulncheck.com/advisories/cap-go-app-e… | third-party-advisory |
Impacted products
Date Public
2026-03-03 00:00
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CVE-2026-55555 (GCVE-0-2026-55555)
Vulnerability from cvelistv5 – Published: 2026-07-28 19:23 – Updated: 2026-07-28 19:43
VLAI
EPSS
VEX
Title
Dompdf: File existence oracle via font-face stylesheet declaration
Summary
Dompdf is an HTML to PDF converter for PHP. Versions 3.15 and prior are vulnerable to a File Existence Oracle attack through the manipulation of the CSS @font-face directive. By providing malicious HTML that references local files via the file:// protocol repeatedly, an attacker can trigger PHP memory exhaustion. Because Dompdf behaves differently depending on whether a referenced local file exists (an existing file is processed repeatedly until it triggers an "Allowed memory size exhausted" crash, whereas a missing file fails fast or is ignored and never hits the memory limit), an attacker can use this observable discrepancy as an oracle to enumerate sensitive files on the server regardless of CHROOT restrictions. Exploitation requires the attacker to supply unrestricted or unsanitized HTML in a request that permits large data, plus a configuration where Dompdf's memory limit is low enough to be exhausted (with $_dompdf_show_warnings=true making the overflow easier to reach). This issue has been fixed in version 3.16.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 19:43 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/dompdf/dompdf/security/advisor… | x_refsource_CONFIRM |
| https://github.com/dompdf/dompdf/commit/75c39a083… | x_refsource_MISC |
| https://github.com/dompdf/dompdf/releases/tag/v3.1.6 | x_refsource_MISC |
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CVE-2026-55227 (GCVE-0-2026-55227)
Vulnerability from cvelistv5 – Published: 2026-08-26 20:10 – Updated: 2026-08-27 13:51
VLAI
EPSS
VEX
Title
Observable object existence disclosure in private Weblate projects via globally scoped object lookups
Summary
Weblate is a web-based localization tool. In versions prior to 2026.7, several endpoints look up objects in a globally scoped manner rather than restricting the lookup to projects the user can access, so they return HTTP 403 (Forbidden) instead of 404 (Not Found) when a user requests an object they are not authorized to see. This difference lets unauthorized users infer whether a given object exists in a private Weblate project. The issue has been fixed in version 2026.7.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 13:51 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/WeblateOrg/weblate/security/ad… | x_refsource_CONFIRM |
| https://github.com/WeblateOrg/weblate/commit/836b… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| WeblateOrg | weblate |
Affected:
< 2026.7
|
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CVE-2026-47379 (GCVE-0-2026-47379)
Vulnerability from cvelistv5 – Published: 2026-06-23 20:17 – Updated: 2026-06-24 13:56
VLAI
EPSS
VEX
Title
NocoDB: Plaintext Password Comparison in Shared Views
Summary
NocoDB is software for building databases as spreadsheets. Prior to 2026.05.1, the shared-view password check fell back to strict-equality (===) comparison for legacy plaintext passwords, leaking the password's length and per-character prefix through response timing. This vulnerability is fixed in 2026.05.1.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-24 13:55 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/nocodb/nocodb/security/advisor… | x_refsource_CONFIRM |
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Mitigation MIT-46
Architecture and Design
Strategy: Separation of Privilege
- Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
- Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
Mitigation MIT-39
Implementation
- Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
- If errors must be captured in some detail, record them in log messages, but consider what could occur if the log messages can be viewed by attackers. Highly sensitive information such as passwords should never be saved to log files.
- Avoid inconsistent messaging that might accidentally tip off an attacker about internal state, such as whether a user account exists or not.
CAPEC-189: Black Box Reverse Engineering
An adversary discovers the structure, function, and composition of a type of computer software through black box analysis techniques. 'Black Box' methods involve interacting with the software indirectly, in the absence of direct access to the executable object. Such analysis typically involves interacting with the software at the boundaries of where the software interfaces with a larger execution environment, such as input-output vectors, libraries, or APIs. Black Box Reverse Engineering also refers to gathering physical side effects of a hardware device, such as electromagnetic radiation or sounds.