CVE-2024-27156
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThe session cookies, used for authentication, are stored in clear-text logs. An attacker can retrieve authentication sessions. A remote attacker can retrieve the credentials and bypass the authentication mechanism. As for the affected products/models/versions, see the reference URL.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceSession cookies used for authentication are stored in clear-text logs, allowing a remote attacker to retrieve valid session credentials and bypass the authentication mechanism.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify session cookie mechanismExamine your application's authentication system to determine the name of the session cookie used (common names include JSESSIONID, PHPSESSID, ASP.NET_SessionId, sessionid, or a custom cookie). Check your browser's developer tools or application documentation.Affected if The application uses any session cookie for authentication and logs HTTP requests or headers without sanitization.
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Locate application and server log filesFind all log files generated by your web server (e.g., Apache access.log, Nginx access.log, IIS logs) and application-level logging (application logs, debug logs, audit logs). Check configuration files for log paths.Affected if Logs are written to any accessible location without filtering of sensitive cookie data.
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Search logs for session cookie valuesGrep through the identified log files for patterns matching the session cookie name and typical session ID formats (alphanumeric strings of 16-64 characters). Use commands like: grep -r 'JSESSIONID\|PHPSESSID\|sessionid' /var/log/ or search your log aggregation system.Affected if Plain-text session cookie values or session IDs appear in any log file.
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Review logging configuration for sensitive data handlingInspect your logging configuration files (log4j.properties, logback.xml, logging config files for your framework) to determine if there are filters, masks, or exclusions for cookies, headers, or authentication tokens.Affected if No filter or redaction rule exists for session cookies or authentication tokens in logging configuration.
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Check if request logging includes headers or cookiesExamine whether your application or server is configured to log full HTTP requests, headers, or cookies (including the Set-Cookie or Cookie headers). Look for patterns like '%{Cookie}i' in Apache, 'proxy_set_header' in Nginx, or custom request logging in application code.Affected if HTTP headers or cookies containing session identifiers are being logged in full without sanitization.
Your environment is affected if session cookies are written to any log file in plain text without redaction, or if logging configuration lacks filters to exclude sensitive cookie data.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataReview and modify logging configurations to exclude session cookies from all application and server logs, and implement session rotation to invalidate potentially compromised sessions.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-27156 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-27156 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data