CVE-2026-3381 | Compress::Raw::Zlib versions through 2.219 for Perl use potentially insecure versions of zlib

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.

Published: 2026-03-04 Last update: 2026-06-17 Assigner: 9b29abf9-4ab0-4765-b253-1875cd9b441e Source: 9b29abf9-4ab0-4765-b253-1875cd9b441e
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-3381 is rated Moderate Risk (54.2/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.55%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-3381

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.03% 0.55% +0.52%
2 2026-03-21 0.06% 0.03% -0.02%
3 2026-03-06 — 0.06% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-3381

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2026-3381

OS Trackers for CVE-2026-3381

vendor priority summary link
alpine — CVE-2026-3381: 1 source package rows (perl-compress-raw-zlib); 5 state rows across 5 repos (3.20-main, 3.21-main, 3.22-main, 3.23-main, edge-main); fixed 5, open 0. https://security.alpinelinux.org/vuln/CVE-2026-3381
debian not yet assigned CVE-2026-3381 not yet assigned priority: Debian including 1 source packages (libcompress-raw-zlib-perl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2026-3381
redhat medium — https://access.redhat.com/security/cve/CVE-2026-3381
ubuntu medium CVE-2026-3381 medium priority: Ubuntu including 2 source packages (libcompress-raw-zlib-perl, perl), 15 status rows across 8 suites (bionic, focal, jammy, noble, questing, trusty, upstream, xenial): needs-triage 7, not-affected 6, released 2. https://ubuntu.com/security/CVE-2026-3381

Affected software / configurations for CVE-2026-3381

Vendor Product Version Raw CPE
pmqs compress::raw::zlib <= 2.219 cpe:2.3:a:pmqs:compress\:\:raw\:\:zlib:*:*:*:*:*:perl:*:*

References for CVE-2026-3381

cvelogic Threat Intelligence