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Fencer Intel
high 7.5

CVE-2015-8770 in the critical feed json

Directory traversal vulnerability in the set_skin function in program/include/rcmail_output_html.php in Roundcube before 1.0.8 and 1.1.x be…

published 2016-01-29 10 y ago modified 2026-06-17 4 mo ago also EUVD-2015-8642

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
22.4%
EPSS 22.4% chance of exploitation in 30 days, percentile 97%
public exploits
1
Exploit-DB

Summary

Directory traversal vulnerability in the set_skin function in program/include/rcmail_output_html.php in Roundcube before 1.0.8 and 1.1.x before 1.1.4 allows remote authenticated users with certain permissions to read arbitrary files or possibly execute arbitrary code via a .. (dot dot) in the _skin parameter to index.php.

Patch / fix

  • roundcube Debian 14, Debian 13, Debian 12 1.1.4+dfsg.1-1

debian advisories DEBIAN-CVE-2015-8770

  • roundcubemail openSUSE Tumbleweed 1.2.3-1.1

opensuse advisories openSUSE-SU-2024:10491-1

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-2015-8770 updated cvss 6.0

roundcube: remote code execution

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

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

Timeline

  1. First public exploit (EDB-39245)
  2. Published

Exploit prediction

22.43% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-39245 Roundcube Webmail 1.1.3 - Directory Traversal webapps, 2016-01-15
  • packetstormsecurity.com http://packetstormsecurity.com/files/135274/Roundcube-1.1.3-Path-Traversal.html referenced PoC, tagged "exploit" by a source, unverified
  • htbridge.com https://www.htbridge.com/advisory/HTB23283 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.0 AV:N/AC:M/Au:S/C:P/I:P/A:P

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

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.