CVE-2026-57074
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedXML::Bare versions through 0.53 for Perl have an unbounded character lookahead. The parserc_parse function attempts to check for multicharacter strings such as "<![CDATA" or element terminators such as ">" without checking that the offsets are within the buffer. Truncated strings such as "<a/" can trigger an out-of-bounds read.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceThe XML::Bare Perl module versions through 0.53 contain an out-of-bounds read vulnerability in the parserc_parse function. The parser performs lookahead operations to detect multicharacter strings like '<![CDATA' and element terminators like '>' without first verifying that the buffer offsets being accessed are within bounds. Malformed XML input such as truncated strings '<a/' triggers this unbounded memory read, potentially allowing disclosure of sensitive memory contents.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm XML::Bare module is installedRun 'perl -MXML::Bare -e 'print $XML::Bare::VERSION'' or check your Perl library path for XML/Bare.pmAffected if The module is present in the Perl environment
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Determine installed XML::Bare versionCompare the version number to the affected range (versions through 0.53). Use 'perl -MXML::Bare -e 'print $XML::Bare::VERSION'' to get the exact version.Affected if Installed version is 0.53 or earlier
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Identify code using XML::Bare parsingSearch source code for calls to 'XML::Bare->new()' or 'xml_bare()' function that invoke the parserc_parse code pathAffected if Code invokes XML::Bare to parse XML input
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Check if input could contain truncated XMLReview data pipelines or file inputs passed to XML::Bare to see if partial/truncated XML like '<a/' could be processedAffected if The application processes XML input that could be truncated or malformed
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Verify parser handles untrusted inputDetermine whether XML data processed by XML::Bare originates from untrusted sources such as user uploads, external APIs, or network inputAffected if Untrusted XML input is passed to the XML::Bare parser
Environment is affected if XML::Bare version 0.53 or earlier is installed AND the parser processes potentially truncated XML input from any source.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpgrade to a patched version of XML::Bare if available; otherwise, avoid processing untrusted XML input with this library until a fix is released, or migrate to a actively-maintained XML parser.
- Consultation3.0 h
- Implementation8.0 h
- Testing5.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,040.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-57074 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-57074 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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