CWE-488
Weakness AllowedExposure of Data Element to Wrong Session
Abstraction: Base · Status: Draft
The product does not sufficiently enforce boundaries between the states of different sessions, causing data to be provided to, or used by, the wrong session.
Mapping guidance
This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.
Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.
Modes of introduction
In the case of Servlets, developers sometimes do not understand that, unless a Servlet implements the SingleThreadModel interface, the Servlet is a singleton; there is only one instance of the Servlet, and that single instance is used and re-used to handle multiple requests that are processed simultaneously by different threads. A common result is that developers use Servlet member fields in such a way that one user may inadvertently see another user's data.
REALIZATION: This weakness is caused during implementation of an architectural security tactic.
Detection methods
Automated Static Analysis
Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)
Effectiveness: High
Content history
updated Potential_Mitigations, Time_of_Introduction
updated Description, Relationships, Other_Notes, Taxonomy_Mappings
updated Demonstrative_Examples
updated Description, Other_Notes
updated Potential_Mitigations
updated Relationships
updated Name
updated Common_Consequences
updated Relationships, Taxonomy_Mappings
updated Relationships
updated Potential_Mitigations
updated Relationships
updated Applicable_Platforms, Modes_of_Introduction, Relationships, Taxonomy_Mappings
updated References, Relationships, Type
updated Relationships
updated Detection_Factors, Relationships
updated Mapping_Notes
updated Weakness_Ordinalities
updated Common_Consequences, Description, Functional_Areas, Modes_of_Introduction, References
101 vulnerabilities reference this CWE, most recent first.
CVE-2026-122233 (GCVE-0-2026-122233)
Vulnerability from cvelistv5 – Published: 2026-11-04 21:06 – Updated: 2026-11-04 21:06- CWE-488 - Exposure of Data Element to Wrong Session
| URL | Tags |
|---|---|
| https://github.com/php/frankenphp/security/adviso… | vendor-advisory |
| https://github.com/php/frankenphp/commit/3fade63b… | patch |
| https://github.com/php/frankenphp/releases/tag/v1.13.4 | release-notes |
| https://www.vulncheck.com/advisories/frankenphp-b… | third-party-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| php | frankenphp |
Affected:
0 , < 1.13.4
(semver)
cpe:2.3:a:php:frankenphp:*:*:*:*:*:*:*:* |
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CVE-2026-121966 (GCVE-0-2026-121966)
Vulnerability from cvelistv5 – Published: 2026-11-04 15:33 – Updated: 2026-11-04 18:17- CWE-488 - Exposure of Data Element to Wrong Session
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CVE-2026-120634 (GCVE-0-2026-120634)
Vulnerability from cvelistv5 – Published: 2026-11-03 23:40 – Updated: 2026-11-03 23:40- CWE-488 - Exposure of Data Element to Wrong Session
| URL | Tags |
|---|---|
| https://metacpan.org/release/LEEJO/CGI-4.72/sourc… | technical-description |
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CVE-2026-115419 (GCVE-0-2026-115419)
Vulnerability from cvelistv5 – Published: 2026-10-22 20:04 – Updated: 2026-10-30 19:30- CWE-488 - Exposure of data element to wrong session
| URL | Tags |
|---|---|
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| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/strands-agents/harness-sdk/sec… | third-party-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
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Affected:
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cpe:2.3:a:aws:strands-agents:*:*:*:*:*:*:*:* |
|
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Affected:
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CVE-2026-114637 (GCVE-0-2026-114637)
Vulnerability from cvelistv5 – Published: 2026-10-22 01:43 – Updated: 2026-10-28 18:57- CWE-488 - Exposure of Data Element to Wrong Session
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CVE-2026-112921 (GCVE-0-2026-112921)
Vulnerability from cvelistv5 – Published: 2026-10-21 21:37 – Updated: 2026-10-30 17:25- CWE-488 - Exposure of Data Element to Wrong Session
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CVE-2026-103869 (GCVE-0-2026-103869)
Vulnerability from cvelistv5 – Published: 2026-10-07 05:46 – Updated: 2026-10-14 22:56- CWE-488 - Exposure of Data Element to Wrong Session
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CVE-2026-103868 (GCVE-0-2026-103868)
Vulnerability from cvelistv5 – Published: 2026-10-07 05:46 – Updated: 2026-10-14 22:56- CWE-488 - Exposure of Data Element to Wrong Session
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CVE-2026-103544 (GCVE-0-2026-103544)
Vulnerability from cvelistv5 – Published: 2026-10-01 06:15 – Updated: 2026-10-01 14:14- CWE-488 - Exposure of Data Element to Wrong Session
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/412354 | vdb-entry |
| https://vuldb.com/vuln/412354/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-103544 | third-party-advisory |
| https://vuldb.com/submit/957984 | third-party-advisory |
| https://github.com/datadrivenconstruction/OpenCon… | exploit |
| https://github.com/datadrivenconstruction/OpenCon… | patch |
| https://github.com/datadrivenconstruction/OpenCon… | product |
| Vendor | Product | Version | |
|---|---|---|---|
| datadrivenconstruction | OpenConstructionERP |
Affected:
14.8.0
Affected: 14.8.1 Unaffected: 15.0.0 cpe:2.3:a:datadrivenconstruction:openconstructionerp:*:*:*:*:*:*:*:* |
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CVE-2026-88017 (GCVE-0-2026-88017)
Vulnerability from cvelistv5 – Published: 2026-09-10 15:55 – Updated: 2026-09-11 20:33- CWE-488 - Exposure of Data Element to Wrong Session
| URL | Tags |
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Mitigation
Protect the application's sessions from information leakage. Make sure that a session's data is not used or visible by other sessions.
Mitigation
Use a static analysis tool to scan the code for information leakage vulnerabilities (e.g. Singleton Member Field).
Mitigation
In a multithreading environment, storing user data in Servlet member fields introduces a data access race condition. Do not use member fields to store information in the Servlet.
CAPEC-59: Session Credential Falsification through Prediction
This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.
CAPEC-60: Reusing Session IDs (aka Session Replay)
This attack targets the reuse of valid session ID to spoof the target system in order to gain privileges. The attacker tries to reuse a stolen session ID used previously during a transaction to perform spoofing and session hijacking. Another name for this type of attack is Session Replay.