Authorization bypass via unprefixed PATH_INFO parsing
Published Nov 12, 2025 · Updated Nov 13, 2025
Authorization bypass in affected Symfony HttpFoundation releases allows remote attackers to evade path-prefix access rules. The Request::preparePathInfo method subtracts the detected base URL from the request URI and previously returned a nonempty remainder without adding a leading slash. This is reachable only when an application uses the resulting noncanonical path in an access rule that assumes slash-prefixed paths, exposing only resources protected by that rule.
Summary
What happened
Authorization bypass in affected Symfony HttpFoundation releases allows remote attackers to evade path-prefix access rules. The Request::preparePathInfo method subtracts the detected base URL from the request URI and previously returned a nonempty remainder without adding a leading slash. This is reachable only when an application uses the resulting noncanonical path in an access rule that assumes slash-prefixed paths, exposing only resources protected by that rule.
The record
- CVE
- CVE-2025-64500
- Published
- Nov 12, 2025
- Updated
- Nov 13, 2025
- Vendor
- Symfony
- Product
- Symfony
- Classifications
- CWE-647, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 12, 2025CVE publishedPublication date reported by the CVE source.
- Nov 13, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=>= 2.0.0, < 5.4.50
- Affected versionversion=>= 6.0.0, < 6.4.29
- Affected versionversion=>= 7.0.0, < 7.3.7
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.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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