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CVE-2026-89058VulnerabilityPublished

Red Hat Security Advisory: resteasy security update

Affects Red Hat resteasySource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-89058· High 7.4

Not known to be exploited · CVSS 7.4 High : upgrade Red Hat RESTEasy to 7.0.5.Final or 6.2.19.Final soon.

Data as of 11 Nov 2026, 13:20 UTC

CVSS 3.1 base score
7.4High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.17.4
Patch
Available – fixed in 7.0.5.Final, 6.2.19.Final
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Upgrade RESTEasy to 7.0.5.Final or 6.2.19.Final.

Affected software

ProductAffectedFixed in
Red HatRESTEasyAffected
  • >=7.0.0.Alpha1 <7.0.5.Final
Fixed in
  • 7.0.5.Final
Red HatRESTEasyAffected
  • <6.2.19.Final
Fixed in
  • 6.2.19.Final
GitHubRESTEasypkg:github/RESTEasyOther threatsAffected
  • <6.2.19.Final
  • >=7.0.0.Alpha1 <7.0.5.Final
Fixed in
  • 6.2.19.Final
  • 7.0.5.Final

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

RESTEasy contains a JBoss project that provides frameworks to help build RESTful Web Services and RESTful Java applications. It is a fully certified and portable implementation of the JAX-RS specification. Security Fix(es): * resteasy-core: RESTEasy: IIOImageProvider Unbounded Image Decode (Decompression-Bomb DoS) (CVE-2026-89059) * resteasy-core: RESTEasy: CorsFilter Reflects Arbitrary Origin with Credentials under Wildcard Config (CVE-2026-89058) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

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