CVE-2026-92987

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-17. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

roxmltree through 0.21.1 performs quadratic-time attribute and namespace validation during XML parsing without limits on attribute count. Attackers can craft XML documents with tens of thousands of attributes on a single element to consume excessive CPU time and cause denial of service.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
29%
KEV
Not listed

Published

September 17, 2026

Last Modified

September 17, 2026

Advisory Details (5)

Auto-updated Sep 17, 2026
No patch confirmed yet.
generic

roxmltree through 0.21.1 Denial of Service via Quadratic Parsing | Advisories | VulnCheck

https://www.vulncheck.com/advisories/roxmltree-through-0.21.1-denial-of-service-via-quadratic-parsing
generic

roxmltree/src/lib.rs at v0.21.1 · RazrFalcon/roxmltree · GitHub

https://github.com/RazrFalcon/roxmltree/blob/v0.21.1/src/lib.rs#L751-L755
generic

roxmltree/src/parse.rs at v0.21.1 · RazrFalcon/roxmltree · GitHub

https://github.com/RazrFalcon/roxmltree/blob/v0.21.1/src/parse.rs#L1014-L1020
generic

GitHub - RazrFalcon/roxmltree: Represent an XML document as a read-only tree. · GitHub

https://github.com/RazrFalcon/roxmltree
generic

Quadratic-time XML parsing DoS: duplicate-attribute & namespace-declaration checks are O(n²) (CWE-407/CWE-1333) · Issue #153 · RazrFalcon/roxmltree · GitHub

https://github.com/RazrFalcon/roxmltree/issues/153

Vendor Advisories for CVE-2026-92987(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 12× 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.

  1. 2026-09-19 04:24 UTCEG score recompute
  2. 2026-09-19 04:23 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 16:55 UTCGHSA enrichment
  5. 2026-09-18 05:26 UTCGHSA enrichment
  6. 2026-09-17 17:58 UTCEG score recompute
  7. 2026-09-17 17:57 UTCGHSA enrichment
  8. 2026-09-17 15:44 UTCEG score recompute
  9. 2026-09-17 15:44 UTCGHSA enrichment
  10. 2026-09-17 15:23 UTCEG score recompute
  11. 2026-09-17 14:34 UTCEG score recompute
  12. 2026-09-17 14:34 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-92987?
CVE-2026-92987 is a high vulnerability published on September 17, 2026. roxmltree through 0.21.1 performs quadratic-time attribute and namespace validation during XML parsing without limits on attribute count. Attackers can craft XML documents with tens of thousands of attributes on a single element to consume excessive CPU time and cause denial of service.
When was CVE-2026-92987 disclosed?
CVE-2026-92987 was first published in the National Vulnerability Database on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-92987 actively exploited?
CVE-2026-92987 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 71.0% of all scored CVEs.
What is the CVSS score of CVE-2026-92987?
CVE-2026-92987 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-92987?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-92987, 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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