What’s Vulnerable › Vulnerabilities

CVE-2025-54430: dedupe is vulnerable to secret exfiltration via `issue_comment`

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-30 · updated 2026-06-17
• Weakness: CWE-78

Description

dedupe is a python library that uses machine learning to perform fuzzy matching, deduplication and entity resolution quickly on structured data. Before commit 3f61e79, a critical severity vulnerability has been identified within the .github/workflows/benchmark-bot.yml workflow, where a issue_comment can be triggered using the @benchmark body. This workflow is susceptible to exploitation as it checkout the ${{ github.event.issue.number }}, which correspond to the branch of the PR manipulated by potentially malicious actors, and where untrusted code may be executed. Running untrusted code may lead to the exfiltration of GITHUB_TOKEN, which in this workflow has write permissions on most of the scopes - in particular the contents one - and could lead to potential repository takeover. This is fixed by commit 3f61e79.

Affected products

• dedupeio dedupe: before 3f61e79102910bd355e920a2df7e44c14c9cb247

References

• https://github.com/dedupeio/dedupe/commit/3f61e79102910bd355e920a2df7e44c14c9cb247
• https://github.com/dedupeio/dedupe/security/advisories/GHSA-wrg3-xqw8-m85p

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