OESA-2026-3714

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-3714
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-3714.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-3714
Upstream
Published
2026-09-14T16:33:38Z
Modified
2026-09-13T16:45:23Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
perl-URI security update
Details

This module implements the URI class. Objects of this class represent "Uniform Resource Identifier references" as specified in RFC 2396 (and updated by RFC 2732).

Security Fix(es):

URI versions before 5.36 for Perl encode non-NFC host names to non-standard punycode labels via missing normalization in nameprep. nameprep lowercases each host label but performs no Unicode normalization. IDNA requires a label to be normalized to Form C before it is encoded (RFC 5891), so a label that is not already in NFC is encoded to a different A-label than its normalized form. A label built from the precomposed Devanagari sequence U+0958 U+093E encodes to xn--72b5c without normalization but to xn--11b2fg after NFC normalization, and xn--72b5c does not round-trip back to the original label. Any caller that reads host() from a URI built from untrusted input and uses it for a security decision (an allow or deny list, an SSRF filter, deduplication, a cache key) sees the non-standard label, while a client that fetches the same URL resolves the NFC form, so the check and the fetch can disagree about the host.(CVE-2026-19953)

Database specific 
{
    "severity": "Critical"
}
References

Affected packages

openEuler:24.03-LTS-SP4 / perl-URI

Package

Name
perl-URI
Purl
pkg:rpm/openEuler/perl-URI&distro=openEuler-24.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.10-3.oe2403sp4

Ecosystem specific 

{
    "noarch": [
        "perl-URI-5.10-3.oe2403sp4.noarch.rpm",
        "perl-URI-help-5.10-3.oe2403sp4.noarch.rpm"
    ],
    "src": [
        "perl-URI-5.10-3.oe2403sp4.src.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3714.json"