CVE-2026-22261

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 76% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, various inefficiencies in xff handling, especially for alerts not triggered in a tx, can lead to severe slowdowns. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, disable XFF support in the eve configuration. The setting is disabled by default.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
26%
KEV
Not listed

Published

January 27, 2026

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated Aug 9, 2026
Patch available. Sources: github_commit, github.
generic

Open Information Security Foundation

https://redmine.openinfosecfoundation.org/issues/8156
github Patch Available

eve/alert: http1 xff handling can lead to denial of service · Advisory · OISF/suricata · GitHub

https://github.com/OISF/suricata/security/advisories/GHSA-5jvg-5j3p-34cf
github_commit

commit af246ae7ab1b (OISF/suricata)

Fix landed in OISF/suricata commit af246ae7ab1b — awaiting tagged release

https://github.com/OISF/suricata/commit/af246ae7ab1b70c09f83c0619b253095ccc18667
github_commit Patch Available

commit 3f0725b34c78 (OISF/suricata)

Patch available: OISF/suricata suricata-8.0.3 (contains commit 3f0725b34c78)

https://github.com/OISF/suricata/commit/3f0725b34c7871c2de4346c8af872f10f4501e44

Affected Packages

(3 across 3 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
suricata1:6.0.1-3 ... 1:8.0.6-1~bpo13+1 (75 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
suricata1:7.0.10-1, 1:7.0.10-1+deb13u1, 1:7.0.10-1+deb13u21:7.0.10-1+deb13u3—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
suricata1:7.0.10-1 ... 1:8.0.3-1~bpo13+1 (14 versions)1:8.0.3-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 152 total refreshes for this CVE.

  1. 2026-09-19 00:06 UTCOSV refresh
  2. 2026-09-18 19:27 UTCEPSS rescore
  3. 2026-09-16 14:07 UTCEPSS rescore
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  16. 2026-08-31 04:03 UTCOSV refresh
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  1. 2026-08-19 17:03 UTCEPSS rescore
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  5. 2026-08-16 02:14 UTCEPSS rescore
  6. 2026-08-15 01:30 UTCEPSS rescore
  7. 2026-08-14 12:09 UTCEG score recompute
  8. 2026-08-13 22:00 UTCEPSS rescore
  9. 2026-08-13 04:13 UTCEG score recompute
  10. 2026-08-12 13:50 UTCEPSS rescore
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  13. 2026-08-09 17:09 UTCEG score recompute
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  20. 2026-08-04 10:38 UTCEPSS rescore
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  22. 2026-08-02 22:01 UTCEG score recompute▲ 1.60
  23. 2026-08-02 02:26 UTCEPSS rescore
  24. 2026-08-01 04:15 UTCEPSS rescore
  25. 2026-07-31 06:12 UTCOSV refresh
  26. 2026-07-30 01:30 UTCEPSS rescore
  27. 2026-07-27 14:13 UTCEPSS rescore
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  35. 2026-07-23 03:06 UTCEG score recompute
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  39. 2026-07-20 17:08 UTCEPSS rescore
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  52. 2026-07-13 22:30 UTCEPSS rescore
  53. 2026-07-13 13:38 UTCOSV refresh
  54. 2026-07-13 06:13 UTCEPSS rescore
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  56. 2026-07-12 05:46 UTCEPSS rescore
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  74. 2026-06-29 14:06 UTCEPSS rescore
  75. 2026-06-28 14:07 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-22261?
CVE-2026-22261 is a medium vulnerability published on January 27, 2026. Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, various inefficiencies in xff handling, especially for alerts not triggered in a tx, can lead to severe slowdowns. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, disable XFF support in the eve…
When was CVE-2026-22261 disclosed?
CVE-2026-22261 was first published in the National Vulnerability Database on January 27, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-22261 actively exploited?
CVE-2026-22261 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 73.6% of all scored CVEs.
What is the CVSS score of CVE-2026-22261?
CVE-2026-22261 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-22261?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-22261, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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