CVE-2026-27882: Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.461, the GitLab webhook endpoint uses a non-constant-time st
Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.461, the GitLab webhook endpoint uses a non-constant-time string comparison operator (!==) to validate the webhook secret token. This implementation is vulnerable to timing attacks, which could allow an attacker to gradually discover the secret token by measuring response time differences. This vulnerability is fixed in 4.0.0-beta.461.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-27882
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-278820.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-27882 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Coolify is an
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- high[NEW] [high] Coolify: Multiple vulnerabilitiescert-bund · 2026-07-10
- highCVE-2026-59734: Coolify is an open-source and self-hostable tool for managing servers, applications, and datab…nvd · 2026-07-09
- high[NEW] [high] Coolify: Vulnerability allows code execution and disclosurecert-bund · 2026-07-07
- lowCVE-2026-42201: Coolify is an open-source and self-hostable tool for managing servers, applications, and datab…nvd · 2026-07-07
- highCVE-2026-34158: Coolify is an open-source and self-hostable tool for managing servers, applications, and datab…nvd · 2026-07-07
- highCVE-2026-42200: Coolify is an open-source and self-hostable tool for managing servers, applications, and datab…nvd · 2026-07-07
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