Directory Traversal The advisory has been revoked - it doesn't affect any version of package grafana-prometheus (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CENTOS8-GRAFANAPROMETHEUS-19405238
- published28 Aug 2026
- disclosed24 Aug 2026
Introduced: 24 Aug 2026
CVE-2026-76844 (opens in a new tab)Amendment
The Centos security team deemed this advisory irrelevant for Centos:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream grafana-prometheus package and not the grafana-prometheus package as distributed by Centos.
zlib 1.2.11 through 1.3.2 contains a heap buffer overflow: after an underlying write() fails, gz_write() returns without resetting strm.next_in, leaving it pointed at the caller's buffer. A later gz* write call then derives a position from the stale pointer and writes past a heap allocation; any write() failure reaches it, including EPIPE on a blocking descriptor, and in versions before 1.3.1.2 the failed write must be followed by a gzclearerr() call.
References
- https://access.redhat.com/security/cve/CVE-2026-76844
- https://github.com/advisories/GHSA-wr3j-pwj9-hqq6
- https://github.com/webpack/webpack-dev-middleware
- https://github.com/webpack/webpack-dev-middleware/blob/v8.1.1/src/middleware.js
- https://www.vulncheck.com/advisories/webpack-dev-middleware-path-traversal-via-offset-slice-on-a-non-slash-terminated-publicpath
- https://github.com/webpack/webpack-dev-middleware/commit/13344e78b26d88fe9b7c8381a3860e248a52359b
- https://github.com/webpack/webpack-dev-middleware/commit/cefccbac330c29052fc6dffe85fd292ea2ac782b
- https://github.com/webpack/webpack-dev-middleware/releases/tag/v7.4.6
- https://github.com/webpack/webpack-dev-middleware/releases/tag/v8.3.0
- https://github.com/webpack/webpack-dev-middleware/security/advisories/GHSA-g84c-rxfj-3j2c
- https://gist.github.com/thesmartshadow/e0b9481792afb7c31e86fee1ff084490
- https://github.com/madler/zlib
- https://github.com/madler/zlib/blob/v1.3.2/gzwrite.c#L393
- https://github.com/madler/zlib/commit/df84af25dc1942490e1d1c899a07619152a46148
- https://www.vulncheck.com/advisories/zlib-1.3.1.2-through-1.3.2-heap-buffer-overflow-via-gz-vacate