Session theft via cached Set-Cookie header replay
Published Feb 3, 2023 · Updated Mar 10, 2025
Information disclosure in Symfony HttpKernel allows remote authenticated users to retrieve another user's session cookie. HttpCache Store::write serializes response headers without removing Set-Cookie, so a cached response can replay a victim's cookie to a later client. The Symfony HttpCache reverse proxy must be enabled, and exploitation exposes the victim's session when the attacker receives the cached response.
Summary
What happened
Information disclosure in Symfony HttpKernel allows remote authenticated users to retrieve another user's session cookie. HttpCache Store::write serializes response headers without removing Set-Cookie, so a cached response can replay a victim's cookie to a later client. The Symfony HttpCache reverse proxy must be enabled, and exploitation exposes the victim's session when the attacker receives the cached response.
The record
- CVE
- CVE-2022-24894
- Published
- Feb 3, 2023
- Updated
- Mar 10, 2025
- Vendor
- Symfony
- Product
- Symfony
- Classifications
- CWE-285, T1539
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 3, 2023CVE publishedPublication date reported by the CVE source.
- Mar 10, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=>= 2.0.0, < 4.4.50
- Affected versionversion=>= 5.0.0, < 5.4.20
- Affected versionversion=>= 6.0.0, < 6.0.20
- Affected versionversion=>= 6.1.0, < 6.1.12
- Affected versionversion=>= 6.2.0, < 6.2.6
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo