Nixpkgs security tracker
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CVE-2026-53505
7.5 HIGH
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Privileges Required (PR): None (N)
- User Interaction (UI): None (N)
- Scope (S): Unchanged (U)
- Confidentiality (C): None (N)
- Integrity (I): None (N)
- Availability (A): High (H)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): Low (L)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): None (N)
- Modified Confidentiality (MC): None (N)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): None (N)
- Modified Availability (MA): High (H)
Activity log
- Created suggestion
Thumbor proportion filter allows unbounded post-transform resize leading to remote DoS
Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor's filters:proportion(<value>) filter does not enforce an upper bound on <value> and runs in the post-transform phase. An attacker can trigger extremely large resizes (CPU/memory exhaustion) and cause denial of service. This issue is fixed in 7.8.0.
References
-
https://github.com/thumbor/thumbor/security/advisories/GHSA-phj3-59pf-cp83 x_refsource_CONFIRM
-
https://github.com/thumbor/thumbor/releases/tag/7.8.0 x_refsource_MISC
Affected products
thumbor
- ==< 7.8.0
Matching in nixpkgs
pkgs.python313Packages.libthumbor
Python extension to thumbor