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Fencer Intel
medium 5.4

CVE-2026-74999 json

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the "Add to address book" action was subject to stored XSS.

published 2mo ago modified 2mo ago also EUVD-2026-60166

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 17%
public exploits
0
none known

Summary

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the "Add to address book" action was subject to stored XSS.

Patch / fix

  • Roundcube Webmail 1.6.18, 1.7.3
  • roundcube Debian 12 1.6.5+dfsg-1+deb12u11
  • roundcube Debian 13 1.6.18+dfsg-0+deb13u1
  • roundcube Debian 14 1.6.18+dfsg-1

debian advisories DEBIAN-CVE-2026-74999

  • roundcubemail openSUSE Leap 16.0 1.6.20-bp160.1.1
  • roundcubemail openSUSE Tumbleweed 1.6.19-1.1

opensuse advisories openSUSE-SU-2026:22195-1openSUSE-SU-2026:12169-1

Is CVE-2026-74999 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2mo ago

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected products

  • Roundcube Webmail

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.