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Vulnerability record · CVE-2026-23878 · published 19 January 2026

CVE-2026-23878: Hotcrp vulnerability

Hotcrp · Hotcrp

HotCRP is conference review software. Starting in commit aa20ef288828b04550950cf67c831af8a525f508 and prior to commit ceacd5f1476458792c44c6a993670f02c984b4a0, authors with at least one submission on a HotCRP site could use the document API to download any documents (PDFs, attachments) associated with any submission. The problem was patched in commit ceacd5f1476458792c44c6a993670f02c984b4a0.

6.5 CVSS 3.1 Medium EPSS 0.30% · top 79.5% CWE-201 · CWE-201
6.5CVSS 3.1 base score
0.30%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

HotCRP is conference review software. Starting in commit aa20ef288828b04550950cf67c831af8a525f508 and prior to commit ceacd5f1476458792c44c6a993670f02c984b4a0, authors with at least one submission on a HotCRP site could use the document API to download any documents (PDFs, attachments) associated with any submission. The problem was patched in commit ceacd5f1476458792c44c6a993670f02c984b4a0.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/kohler/hotcrp/commit/aa20ef288828b04550950cf67c831af8a525f508 Patch
https://github.com/kohler/hotcrp/commit/ceacd5f1476458792c44c6a993670f02c984b4a0 Patch
https://github.com/kohler/hotcrp/security/advisories/GHSA-vh3x-xwj4-jvqx Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2026-23836Hotcrp improper input validation vulnerabilityHotCRP is conference review software. A problem introduced in April 2024 in version 3.1 led to inadequately sanitized code generation for HotCRP form…EPSS 0.45%6.3CVE-2026-25156Hotcrp cross-site scripting vulnerabilityHotCRP is conference review software. HotCRP versions from October 2025 through January 2026 delivered documents of all types with inline Content-Dis…EPSS 0.27%6.1CVE-2022-4819Hotcrp cross-site scripting vulnerabilityA vulnerability was found in HotCRP. It has been rated as problematic. Affected by this issue is some unknown functionality. The manipulation leads t…EPSS 0.51%

Source: NIST National Vulnerability Database (record CVE-2026-23878), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.