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Fencer Vulns
high 8.8

CVE-2018-5702 in the critical feed json

Transmission through 2.92 relies on X-Transmission-Session-Id (which is not a forbidden header for Fetch) for access control, which allows…

published 2018-01-15 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-17471

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
11.9%
EPSS 11.9% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

Transmission through 2.92 relies on X-Transmission-Session-Id (which is not a forbidden header for Fetch) for access control, which allows remote attackers to execute arbitrary RPC commands, and consequently write to arbitrary files, via POST requests to /transmission/rpc in conjunction with a DNS rebinding attack.

Patch / fix

  • transmission Debian 14, Debian 13, Debian 12 2.92-3

debian advisories DEBIAN-CVE-2018-5702

  • transmission Ubuntu 14.04 LTS 2.82-1.1ubuntu3.2
  • transmission Ubuntu 16.04 LTS 2.84-3ubuntu3.1

ubuntu advisories UBUNTU-CVE-2018-5702

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

  • transmission openSUSE Tumbleweed 3.00-2.8

opensuse advisories openSUSE-SU-2024:11474-1

  • transmission-cli Arch Linux 2.92-8

arch linux advisories AVG-588

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-2018-5702 updated cvss 8.3

transmission: Remote code execution (RCE) in rpc session-id via dns rebinding attack

  • 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-43665)
  2. Published

Exploit prediction

11.93% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-43665 Transmission - RPC DNS Rebinding remote, 2018-01-11
  • github.com https://github.com/transmission/transmission/pull/468 referenced PoC, tagged "exploit" by a source, unverified
  • bugs.chromium.org https://bugs.chromium.org/p/project-zero/issues/detail?id=1447 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns 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.