Red Hat Security Advisory: perl-URI security update
Affects Red Hat perl-URISource GCVE Database
Not known to be exploited · CVSS 6.5 Medium : upgrade Red Hat URI to 5.36 when convenient.
Data as of 11 Nov 2026, 13:51 UTC
- Patch
- Available – fixed in 5.36
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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 11 Nov 2026.
What to do
Upgrade URI to 5.36.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
CPANURIpkg:cpan/URIOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Red Hat has released an official security update for the perl-URI package in Red Hat Enterprise Linux 10. Users should apply the update perl-URI-5.27-4.el10_3 available through Red Hat's official channels. Detailed update instructions are provided in Red Hat's advisory and article (https://access.redhat.com/articles/11258). No additional mitigation steps are indicated beyond applying the official patch.
Description
A security vulnerability (CVE-2026-19953) exists in the perl-URI module used in Red Hat Enterprise Linux 10. The flaw involves a security bypass caused by incorrect hostname encoding due to missing Unicode normalization. This issue affects the URI class implementation for Perl, which handles Uniform Resource Identifier references. Red Hat has issued a security update to address this vulnerability.