Red Hat Security Advisory: resteasy security update
Affects Red Hat resteasySource GCVE Database
Not known to be exploited · CVSS 7.5 High.
Data as of 29 Oct 2026, 07:44 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 7.5 |
|---|
- EPSS
- 0.8% chance of exploitation in 30 days – higher than 57% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 31 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Build of Apache Camel 3.33.3.SP1org.jboss.resteasy/resteasy-core | Affected– | Fixed in– |
| Red Hat build of Keycloak 26.6rhbk/keycloak-operator-bundle | Affected– | Fixed in– |
| Red Hat build of Keycloak 26.6rhbk/keycloak-rhel9 | Affected– | Fixed in– |
| Red Hat build of Keycloak 26.6rhbk/keycloak-rhel9-operator | Affected– | Fixed in– |
| Red Hat build of Keycloak 26.6.7keycloak/rhbk-rhel9-operator | Affected– | Fixed in– |
| Red Hat build of Keycloak 26.6.7resteasy-core | Affected– | Fixed in– |
AI-suggested
Red Hat has released updated packages (resteasy-3.0.26-20.el9_4) that fix the vulnerability. Users of affected Red Hat Enterprise Linux 9.4 variants should apply the security update as detailed in the Red Hat advisory (https://access.redhat.com/articles/11258). No additional mitigation steps are indicated beyond applying the official patch.
Description
A security vulnerability (CVE-2026-17615) has been identified in RESTEasy, a JBoss project framework for building RESTful Web Services and Java applications. The flaw involves a remote unauthenticated file read issue in the resteasy-core SourceProvider component. Red Hat has issued a security advisory and released updates for Red Hat Enterprise Linux 9.4 variants to address this vulnerability. The severity is rated as Important by Red Hat Product Security. The advisory provides updated packages to remediate the issue.