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TI-2026-07199 Aliases CVE-2026-8177GHSA-g5h8-x64v-qf5h

Out-of-bounds read in SHLOMIF XML::LibXML

Priority MEDIUM 40CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 13 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.

Summary

XML::LibXML versions through 2.0210 for Perl read out-of-bounds heap memory when parsing XML node names containing truncated UTF-8 byte sequences. A node name ending in the middle of a multi byte UTF-8 sequence causes the parser to read past the end of the input string into adjacent heap memory. Any Perl process that passes attacker controlled strings to XML::LibXML's DOM node-name methods can reach this path on the default API. The likely consequence is a crash, causing denial of service.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00654 51st percentileScored 2026-11-07
Fix Partial Red Hat: 10 advisoriesRed Hat: 13 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SHLOMIFXML::LibXMLup to 2.0210—No fix listedCNA
  • XML::LibXML VendorSHLOMIF Affected up to 2.0210 Fixed in — No fix listed CNA

Remediation

Red Hat 10 advisories

  • RHSA-2026:93470 Released 2026-11-02 · Red Hat rating Important
    perl-XML-LibXML security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) perl-XML-LibXML-1:2.0132-2.el8_4.1
    • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) perl-XML-LibXML-1:2.0132-2.el8_4.1
  • RHSA-2026:92798 Released 2026-10-29 · Red Hat rating Important
    perl-XML-LibXML security update
    • Red Hat Enterprise Linux AppStream E4S (v.8.8) perl-XML-LibXML-1:2.0132-2.el8_8.1
    • Red Hat Enterprise Linux AppStream TUS (v.8.8) perl-XML-LibXML-1:2.0132-2.el8_8.1
  • RHSA-2026:92800 Released 2026-10-29 · Red Hat rating Important
    perl-XML-LibXML security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) perl-XML-LibXML-1:2.0132-2.el8_6.1
    • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) perl-XML-LibXML-1:2.0132-2.el8_6.1
Show 7 more Red Hat advisories
  • RHSA-2026:68693 Released 2026-09-17 · Red Hat rating Important
    perl-XML-LibXML security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) perl-XML-LibXML-1:2.0206-5.el9_6.1
  • RHSA-2026:68688 Released 2026-09-17 · Red Hat rating Important
    perl-XML-LibXML security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) perl-XML-LibXML-1:2.0206-5.el9_2.1
  • RHSA-2026:68685 Released 2026-09-17 · Red Hat rating Important
    perl-XML-LibXML security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) perl-XML-LibXML-1:2.0206-5.el9_4.1
  • RHSA-2026:68632 Released 2026-09-17 · Red Hat rating Important
    perl-XML-LibXML security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) perl-XML-LibXML-1:2.0210-4.el10_0.1
  • RHSA-2026:39878 Released 2026-07-15 · Red Hat rating Important
    perl-XML-LibXML security update
    • Red Hat Enterprise Linux AppStream (v. 8) perl-XML-LibXML-1:2.0132-3.el8_10
  • RHSA-2026:39553 Released 2026-07-15 · Red Hat rating Important
    perl-XML-LibXML security update
    • Red Hat Enterprise Linux AppStream (v. 9) perl-XML-LibXML-1:2.0206-5.el9_8.1
  • RHSA-2026:39547 Released 2026-07-14 · Red Hat rating Important
    perl-XML-LibXML security update
    • Red Hat Enterprise Linux AppStream (v. 10) perl-XML-LibXML-1:2.0210-4.el10_2.1

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:39547
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:39878
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:39553
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2026:93470
Red Hat Enterprise Linux AppStream AUS (v.8.6)Fixed RHSA-2026:92800
Red Hat Enterprise Linux AppStream E4S (v.8.8)Fixed RHSA-2026:92798
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:68688
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:68685
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:68632
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:68693
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)Fixed RHSA-2026:93470
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)Fixed RHSA-2026:92800
Red Hat Enterprise Linux AppStream TUS (v.8.8)Fixed RHSA-2026:92798
Not affected: 5 products
  • Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • Red Hat OpenShift Container Platform 4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-8177
  2. 2026-10-03 Alias added: GHSA-g5h8-x64v-qf5h
  3. 2026-10-30 Fix available: RHSA-2026:92800 · Red Hat
  4. 2026-10-30 Fix available: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) +1 · Red Hat
  5. 2026-10-30 Fix available: RHSA-2026:92798 · Red Hat
  6. 2026-11-02 Fix available: RHSA-2026:93470 · Red Hat
  7. 2026-11-02 Fix available: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) · Red Hat

References

Patch 1

Other 2

  • TI-2026-09956 OS command injection in SHLOMIF Config::IniFiles CVSS 3.1HIGH 8.6

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences