CVE-2026-8177: CWE-125 Out-of-bounds Read in SHLOMIF XML::LibXML
CVE-2026-8177 is a high-severity vulnerability in the XML::LibXML Perl module that causes an out-of-bounds read when parsing XML node names containing truncated UTF-8 byte sequences. This flaw can cause the Perl process to crash, resulting in a denial of service. The vulnerability affects versions through 2.0210 and occurs when a node name ends in the middle of a multi-byte UTF-8 sequence, leading the parser to read beyond the input buffer into adjacent heap memory. There is no confirmed patch or official remediation available at this time.
AI Analysis
Technical Summary
CVE-2026-8177 is an out-of-bounds read vulnerability (CWE-125) in the XML::LibXML Perl module maintained by SHLOMIF. It arises when the parser encounters XML node names that end with truncated UTF-8 byte sequences, causing it to read beyond the allocated input buffer into adjacent heap memory. This can crash the Perl process, resulting in denial of service. The vulnerability affects versions through 2.0210. No patch or official fix has been released as of the published date.
Potential Impact
The primary impact is a denial of service due to a crash of the Perl process using the vulnerable XML::LibXML module. There is no indication of confidentiality or integrity loss. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid processing untrusted XML inputs that may contain truncated UTF-8 sequences in node names to reduce risk of denial of service.
CVE-2026-8177: CWE-125 Out-of-bounds Read in SHLOMIF XML::LibXML
Description
CVE-2026-8177 is a high-severity vulnerability in the XML::LibXML Perl module that causes an out-of-bounds read when parsing XML node names containing truncated UTF-8 byte sequences. This flaw can cause the Perl process to crash, resulting in a denial of service. The vulnerability affects versions through 2.0210 and occurs when a node name ends in the middle of a multi-byte UTF-8 sequence, leading the parser to read beyond the input buffer into adjacent heap memory. There is no confirmed patch or official remediation available at this time.
CVSS v3.1
Score 7.5high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-8177 is an out-of-bounds read vulnerability (CWE-125) in the XML::LibXML Perl module maintained by SHLOMIF. It arises when the parser encounters XML node names that end with truncated UTF-8 byte sequences, causing it to read beyond the allocated input buffer into adjacent heap memory. This can crash the Perl process, resulting in denial of service. The vulnerability affects versions through 2.0210. No patch or official fix has been released as of the published date.
Potential Impact
The primary impact is a denial of service due to a crash of the Perl process using the vulnerable XML::LibXML module. There is no indication of confidentiality or integrity loss. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid processing untrusted XML inputs that may contain truncated UTF-8 sequences in node names to reduce risk of denial of service.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- CPANSec
- Date Reserved
- 2026-05-08T15:36:17.532Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a00f350cbff5d8610ed21ff
Added to database: 5/10/2026, 9:06:24 PM
Last enriched: 6/3/2026, 9:13:16 PM
Last updated: 6/18/2026, 5:10:33 AM
Views: 100
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