CVE-2026-42154
- Source
- https://cve.org/CVERecord?id=CVE-2026-42154
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-42154.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-42154
- Aliases
- Downstream
- Related
- Published
- 2026-05-04T18:13:12.340Z
- Modified
- 2026-05-18T06:00:10.377349661Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- Prometheus: remote read endpoint allows denial of service via crafted snappy payload
- Details
-
Prometheus is an open-source monitoring system and time series database. Prior to versions 3.5.3 and 3.11.3, the remote read endpoint (/api/v1/read) does not validate the declared decoded length in a snappy-compressed request body before allocating memory. An unauthenticated attacker can send a small payload that causes a huge heap allocation per request. Under concurrent load this can exhaust available memory and crash the Prometheus process. This issue has been patched in versions 3.5.3 and 3.11.3.
- Database specific
{ "cwe_ids": [ "CWE-400", "CWE-789" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42154.json", "cna_assigner": "GitHub_M" }- References
-
- https://github.com/prometheus/prometheus/releases/tag/v3.11.3
- https://github.com/prometheus/prometheus/releases/tag/v3.5.3
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42154.json
- https://github.com/prometheus/prometheus/security/advisories/GHSA-8rm2-7qqf-34qm
- https://nvd.nist.gov/vuln/detail/CVE-2026-42154
- https://github.com/prometheus/prometheus/pull/18584
- https://github.com/prometheus/prometheus/pull/18585