CVE-2026-100227

UNRATEDCVSS · not yet scoredTrending — 5 sources updated this week
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EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS v2: —Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

Improper Verification of Cryptographic Signature vulnerability in Apache CXF's JAX-RS XML Security module. The JAX-RS XML Signature interceptors (XmlSigInHandler, XmlSigInInterceptor and the streaming XmlSecInInterceptor) did not ensure that the XML passed to the application was covered by the signature. An attacker with any document signed by a trusted key could wrap it in unsigned content, which the application would then treat as signed. Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.

CVSS v3
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EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
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EG Risk
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EPSS PROB
0.2%
EPSS %ILE
6th
KEV
Not listed

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

October 9, 2026

Last Modified

October 9, 2026

References (2)

Vendor Advisories for CVE-2026-100227(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 13× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  2. 2026-10-12 16:42 UTCEG score recompute
  3. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  4. 2026-10-11 20:17 UTCEG score recompute
  5. 2026-10-11 18:29 UTCEG score recompute
  6. 2026-10-11 15:03 UTCEG score recompute
  7. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  8. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  9. 2026-10-09 16:55 UTCGHSA enrichmentGHSA-m89p-3qw6-fh4r
  10. 2026-10-09 12:31 UTCGHSA enrichmentGHSA-m89p-3qw6-fh4r
  11. 2026-10-09 11:29 UTCNVD update
  12. 2026-10-09 10:29 UTCEG score recompute
  13. 2026-10-09 10:28 UTCMITRE cvelistV5first tracked

Frequently asked(4)

What is CVE-2026-100227?
CVE-2026-100227 is a vulnerability whose severity is not yet rated; its CVE record was published on October 9, 2026. Improper Verification of Cryptographic Signature vulnerability in Apache CXF's JAX-RS XML Security module. The JAX-RS XML Signature interceptors (XmlSigInHandler, XmlSigInInterceptor and the streaming XmlSecInInterceptor) did not ensure that the XML passed to the application was covered by the…
When was the CVE record for CVE-2026-100227 published?
The CVE record for CVE-2026-100227 was published on October 9, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 9, 2026; the record at its source may have been updated since.
Is CVE-2026-100227 actively exploited?
CVE-2026-100227 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (6th percentile of EPSS-scored CVEs).
How do I remediate CVE-2026-100227?
The CVE record for CVE-2026-100227 names the fix: "Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue." The vendor advisories EchelonGraph has for CVE-2026-100227 are linked in the Vendor Advisories panel on this page.

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