CVE-2026-7040
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 · uneditedText::Minify::XS versions from 0.3.0 before 0.7.8 for Perl have a heap overflow when processing some malformed UTF-8 characters. The minify functions mishandled some malformed UTF-8 characters, leading to heap corruption. Note that the minify_utf8 function is an alias for minify.
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 · high confidenceText::Minify::XS is a Perl XS module (C extension) that provides text minification functions. A heap overflow vulnerability exists in versions 0.3.0 through 0.7.7 when processing malformed UTF-8 characters, causing heap corruption due to incorrect boundary checks during minification operations.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 0.3.0, < 0.7.8CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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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Check if Text::Minify::XS is installedRun: perl -MText::Minify::XS -e 'print "Installed\n"'Affected if If the module is not installed, the vulnerability does not apply.
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Determine installed version of Text::Minify::XSRun: perl -MText::Minify::XS -e 'print $Text::Minify::XS::VERSION'Affected if If no version is returned, the module is installed but version cannot be determined via this method.
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Compare version to affected rangeCompare the returned version number to the vulnerable range: 0.3.0 through 0.7.7. Versions below 0.3.0 or 0.7.8 and later are not affected.Affected if If the version falls within >= 0.3.0 and < 0.7.8, the installation is potentially vulnerable.
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Identify if the module processes UTF-8 dataSearch codebases for calls to Text::Minify::XS minify functions (minify, minify_html, etc.) with UTF-8 encoded strings, particularly from external or untrusted input sources.Affected if If the module is installed in the vulnerable version range AND processes UTF-8 input, the heap overflow can be triggered by malformed UTF-8 sequences.
A system is affected if Text::Minify::XS version 0.3.0 through 0.7.7 is installed AND the module is actively processing UTF-8 text from external or untrusted sources that could contain malformed sequences.
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.
dbcve · scoped0.7.8
Upgrade Text::Minify::XS to version 0.7.8 or later to obtain the patch. If immediate upgrade is not possible, validate and sanitize UTF-8 input before passing to minify functions to avoid triggering the overflow with malformed sequences.
0.7.8 or later
- Check the currently installed version of Text::Minify::XS: perl -MText::Minify::XS -e 'print $Text::Minify::XS::VERSION'
- Upgrade Text::Minify::XS to version 0.7.8 or later using CPAN: cpan Text::Minify::XS
- Verify the upgrade was successful by checking the new version: perl -MText::Minify::XS -e 'print $Text::Minify::XS::VERSION'
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing4.0 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 $2,752.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-7040 — 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-2026-7040 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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- Version or environment caveats, and links to real fixes
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