CVE-2026-50012

mediumpriority · track · 22EPSS 0.014 · 72 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.36% (72nd) EPSS

CVSS 5.5 · medium

Is it mine?

23 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-22

Squid is a caching proxy for the Web. Prior to 7.6, due to an improper input validation bug in cache digest reply handling (peerDigestSwapInMask in src/peer_digest.cc), Squid is vulnerable to a heap-based buffer overflow: a cache digest's on-the-wire size may be larger than the mask_size declared within the digest, so a trusted peer sending a maliciously crafted reply to a cache_digest request message can trigger the overflow. This attack is limited to Squid instances compiled with the --enable-cache-digests option and configured with cache_peer entries. This issue is fixed in version 7.6.

cvss

Technical severity, 0–10. One row per scoring source.

5.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.5mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:Hprimary · NVD / NIST USexploitability 1.2 · impact 4.2

v3.15.5mediumAV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:Hsecondary · FSTEC (BDU) RU

v3.15.5mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:Hsecondary · ENISA EU

v3.15.5mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:Hsecondary · security-advisories@github.comexploitability 1.2 · impact 4.2

v3.15.1mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-122USCWE-122USCWE-20US

affected products (23)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
Open Source Squid< 7.6cert_bundDE
squid-cache squid≤ < 7.6enisa_euvdEU
Canonical Ltd. Ubuntu≤ 26.04 LTSfstec_bduRU
Canonical Ltd. Ubuntu≤ 24.04 LTSfstec_bduRU
Canonical Ltd. Ubuntu≤ 22.04 LTSfstec_bduRU
Canonical Ltd. Ubuntu≤ 25.10fstec_bduRU
Red Hat, Inc. Red Hat Enterprise Linux≤ 9fstec_bduRU
Red Hat, Inc. Red Hat Enterprise Linux≤ 6fstec_bduRU
Red Hat, Inc. Red Hat Enterprise Linux≤ 7fstec_bduRU
Red Hat, Inc. Red Hat Enterprise Linux≤ 8fstec_bduRU
Red Hat, Inc. Red Hat Enterprise Linux≤ 10fstec_bduRU
Squid Software Foundation Squid≤ 7.6fstec_bduRU
ООО «Ред Софт» РЕД ОС≤ 8.0fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 12fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 13fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 11fstec_bduRU

showing 20 of 23

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-1920Squid: Mehrere SchwachstellenDeutsch2026-06-14csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Squid ausnutzen, um Informationen offenzulegen und um einen nicht näher spezifizierten Angriff durchzuführen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2026-07-16modified 2026-09-25

references (12)

External citations — patches, advisories, analysis.

scry

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