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Fencer Intel
medium 6.1

CVE-2019-12970 json

XSS was discovered in SquirrelMail through 1.4.22 and 1.5.x through 1.5.2.

published 7y ago modified 4mo ago also EUVD-2019-4545

cvss
6.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits
0
none known

Summary

XSS was discovered in SquirrelMail through 1.4.22 and 1.5.x through 1.5.2. Due to improper handling of RCDATA and RAWTEXT type elements, the built-in sanitization mechanism can be bypassed. Malicious script content from HTML e-mail can be executed within the application context via crafted use of (for example) a NOEMBED, NOFRAMES, NOSCRIPT, or TEXTAREA element.

Patch / fix

  • squirrelmail Ubuntu 16.04 LTS 2:1.4.23~svn20120406-2+deb8u3ubuntu0.16.04.2
  • squirrelmail Ubuntu Pro 14.04 LTS 2:1.4.23~svn20120406-2+deb8u3ubuntu0.14.04.1~esm1

ubuntu advisories UBUNTU-CVE-2019-12970

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2019-12970 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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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-12970 updated cvss 6.3

squirrelmail: improper handling of RCDATA and RAWTEXT type elements causing XSS

  • Red Hat Enterprise Linux 5 squirrelmail
    affected: no fix planned “Out of support scope”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.82% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • syss.de https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2019-016.txt referenced PoC, tagged "exploit" by a source, unverified
  • seclists.org https://seclists.org/bugtraq/2019/Jul/0 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/153495/SquirrelMail-1.4.22-Cross-Site-Scripting.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

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.