CVE-2026-7040: Text::Minify::XS versions from 0.3.0 before 0.7.8 for Perl have a heap overflow when processing some malformed

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HIGH 7.5REMOTEUPGRADE

CVE-2026-7040 is a high-severity flaw (CVSS 7.5) affecting text\. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Text::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.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 62%)
CISA exploited list	No
Weakness	CWE-122, CWE-176
Published	2026-04-27
Last modified	2026-10-26

Publisher (CNA): CPANSec · Vendor: rrwo

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-27 13:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

rrwo text\ UPGRADE

Affected: >= 0.3.0 and < 0.7.8

Fixed in: 0.7.8

Safe to downgrade to: a release before 0.3.0

1. Check installed version

apt-cache policy text || rpm -q text || text --version

2. UPGRADE to 0.7.8 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade text

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade text

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 0.3.0 (Debian / Ubuntu)

apt-cache madison text sudo apt install text=<VERSION_BEFORE_0.3.0> sudo apt-mark hold text

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list text sudo dnf downgrade text-<VERSION_BEFORE_0.3.0> sudo dnf versionlock add text

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-7040?

text\: upgrade to 0.7.8. Exact commands for each OS are on this page.

Is CVE-2026-7040 being exploited?

CVE-2026-7040 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-7040 affect?

CVE-2026-7040 affects text\. Severity is high (CVSS 7.5). Text::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 mi

How urgent is CVE-2026-7040?

Priority 41/100. High severity; Remotely exploitable, no login, no user action

Software pages

Perl vulnerabilities

Related CVEs

CVE-2026-7111 HIGH 8.4 UPGRADE Text::CSV_XS versions before 1.62 for Perl have a use-after-free when registered callbacks extend the Perl arg

References

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