Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-57226

CVE-2026-57226MEDIUM

OISF suricata — Suricata swf: heap buffer overflow in SWF decompression depth handling

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   H   N   N  U  N  N  H    5.9   .0059   46.4     —

AFFECTED
  Product   Versions             Fixed
  suricata  >= 8.0.0, < 8.0.6 –  —

TIMELINE
  Jun 24  Reserved by GitHub_M
  Sep 18  Published (CNA: GitHub_M)
  Sep 28  EXPLOIT PUBLISHED — CVE-2026-57226 (OISF suricata). Public exploit reference added.
  Sep 28  RESCORED — CVE-2026-57226 (OISF suricata). CVSS 3.7 → 5.9 (NVD).

CWE-122, CWE-190 · CNA: GitHub_M · CVSS v3.1 · 8 references · NVD status: Analyzed

Description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, HTTP SWF decompression with the non-default swf-decompression feature and an unsafe decompress-depth can use the configured depth when allocating in src/util-file-decompression.c instead of limiting the allocation to the Flash file's actual data requirement. A crafted SWF response can therefore trigger an integer-related heap buffer overflow and crash Suricata; the default disabled feature and default depth are not affected. This issue is fixed in versions 8.0.6 and 7.0.17.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
June 24, 2026	Reserved	Reserved by GitHub_M
September 18, 2026	Published	Published (CNA: GitHub_M)
September 28, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-57226 (OISF suricata). Public exploit reference added.
September 28, 2026	RESCORED	RESCORED — CVE-2026-57226 (OISF suricata). CVSS 3.7 → 5.9 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
OISF	suricata	—	>= 8.0.0, < 8.0.6	—

Weaknesses

CWE-122 · CWE-190

References (8)

https://github.com/OISF/suricata/commit/82af0aeb7cec39e206a9ca96c4966425eddeaa74 [Patch]
https://github.com/OISF/suricata/commit/b63224871b0f8b0b1f7b8c22d05ba8a5c5f69fbb [Patch]
https://github.com/OISF/suricata/commit/d9fae18432501674338e28bd33e35788c95d4a98 [Patch]
https://github.com/OISF/suricata/pull/15704 [Patch]
https://github.com/OISF/suricata/releases/tag/suricata-7.0.17 [Release Notes]
https://github.com/OISF/suricata/releases/tag/suricata-8.0.6 [Release Notes]
https://github.com/OISF/suricata/security/advisories/GHSA-p33j-r48q-3jcf [Mitigation, Vendor Advisory]
https://redmine.openinfosecfoundation.org/issues/8642 [Exploit, Issue Tracking, Third Party Advisory]

Authoritative record: CVE-2026-57226 at cve.org

Vendors: oisf

Weaknesses: CWE-122 · CWE-190

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-57226 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.