How severe is CVE-2026-3381?

CVE-2026-3381 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-3381 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3381?

CVE-2026-3381 affects Pmqs Compress. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3381?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-3381 have an EU (EUVD) identifier?

Yes. CVE-2026-3381 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9520.

When was CVE-2026-3381 published?

CVE-2026-3381 was published on 2026-03-05 and last updated on 2026-06-17.

CVE-2026-3381

CVE-2026-3381 is a critical-severity vulnerability in Pmqs Compress with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1284.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9520
Weakness: CWE-1284
Affected product: Pmqs Compress
Published: 2026-03-05
Last modified: 2026-06-17

Description

Compress::Raw::Zlib versions through 2.219 for Perl use potentially insecure versions of zlib. Compress::Raw::Zlib includes a copy of the zlib library. Compress::Raw::Zlib version 2.220 includes zlib 1.3.2, which addresses findings fron the 7ASecurity audit of zlib. The includes fixs for CVE-2026-27171.

Frequently asked questions

What is CVE-2026-3381?: Compress::Raw::Zlib versions through 2.219 for Perl use potentially insecure versions of zlib. Compress::Raw::Zlib includes a copy of the zlib library. Compress::Raw::Zlib version 2.220 includes zlib 1.3.2, which addresses findings fron the 7ASecurity audit of zlib. The includes fixs for CVE-2026-27171.
How severe is CVE-2026-3381?: CVE-2026-3381 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-3381 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3381?: CVE-2026-3381 affects Pmqs Compress. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3381?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-3381 have an EU (EUVD) identifier?: Yes. CVE-2026-3381 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9520.
When was CVE-2026-3381 published?: CVE-2026-3381 was published on 2026-03-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pmqs:compress\:\:raw\:\:zlib:*:*:*:*:*:perl:*:*

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