CVE-2026-23836

HotCRP vulnerable to remote code execution through formulas

CVSS 10 CRITICALEPSS 0.4%CWE-20

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 10EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

19 Jan 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

HotCRP is conference review software. A problem introduced in April 2024 in version 3.1 led to inadequately sanitized code generation for HotCRP formulas which allowed users to trigger the execution of arbitrary PHP code. The problem is patched in release version 3.2.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

kohler · hotcrp

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References

https://github.com/kohler/hotcrp/commit/4674fcfbb76511072a1145dad620756fc1d4b4e9 https://github.com/kohler/hotcrp/commit/bfc7e0db15df6ed6d544a639020d2ce05a5f0834 https://github.com/kohler/hotcrp/security/advisories/GHSA-hpqh-j6qx-x57h