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CVE-2026-23878

HotCRP vulnerable to exposure of submitted documents

MEDIUM
6.5
CVSS Score
Published: January 19, 2026 at 06:08 PM UTC
Updated: June 17, 2026 at 10:22 AM UTC
2 products affected across 2 vendorsHotcrpHotCRP

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

References (3)

x_refsource_CONFIRMVendor Advisory
Source: cverecord
https://github.com/kohler/hotcrp/security/advisories/GHSA-vh3x-xwj4-jvqx
x_refsource_MISCPatch
Source: cverecord
https://github.com/kohler/hotcrp/commit/aa20ef288828b04550950cf67c831af8a525f508
x_refsource_MISCPatch
Source: cverecord
https://github.com/kohler/hotcrp/commit/ceacd5f1476458792c44c6a993670f02c984b4a0

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-201

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