CVE-2026-62644

criticalpriority · track · 39EPSS 0.005 · 43 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.50% (43rd) EPSS

CVSS 9.8 · critical

Is it mine?

15 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-26

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, the password plugin of the Roundcube Webmail was subject to username spoofing via session data, which could lead to account takeover.

cvss

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

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.4–9.8

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.16.4mediumAV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.16.4mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:Nsecondary · ENISA EU

v3.16.4mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:Nsecondary · cve@mitre.org USexploitability 1.2 · impact 5.2

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

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

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-290USCWE-290US

affected products (15)

Products and version ranges known to be affected.

Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
Open Source Roundcube< 1.6.17cert_bundDE
Open Source Roundcube< 1.7.2cert_bundDE
cPanel cPanel/WHM< 110.0.136cert_bundDE
cPanel cPanel/WHM< 110.0.138cert_bundDE
cPanel cPanel/WHM< 134.0.45cert_bundDE
cPanel cPanel/WHM< 136.0.29cert_bundDE
cPanel cPanel/WHM< 137.9999.96cert_bundDE
Roundcube Webmail1.6.0 → 1.6.17enisa_euvdEU
Roundcube Webmail1.7.0 → 1.7.2enisa_euvdEU
The RoundCube Team RoundCube Webmail≤ 1.6.17fstec_bduRU
The RoundCube Team RoundCube Webmail≤ 1.7.2fstec_bduRU
roundcube webmail1.6.0 → 1.6.17nvdUScpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
roundcube webmail1.7.0 → 1.7.2nvdUScpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2207Roundcube: Mehrere SchwachstellenDeutsch2026-07-05csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Roundcube ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Denial-of-Service-Angriffe zu verursachen, Cross-Site-Scripting-Angriffe durchzuführen sowie Daten zu manipulieren oder offenzulegen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd NVD CVE.org MITRE

published 2026-07-14modified 2026-10-24

references (21)

External citations — patches, advisories, analysis.

scry

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