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Fencer Vulns
high 8.8

CVE-2018-1000858 json

GnuPG version 2.1.12 - 2.2.11 contains a Cross ite Request Forgery (CSRF) vulnerability in dirmngr that can result in Attacker controlled C…

published 2018-12-20 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-2043

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

GnuPG version 2.1.12 - 2.2.11 contains a Cross ite Request Forgery (CSRF) vulnerability in dirmngr that can result in Attacker controlled CSRF, Information Disclosure, DoS. This attack appear to be exploitable via Victim must perform a WKD request, e.g. enter an email address in the composer window of Thunderbird/Enigmail. This vulnerability appears to have been fixed in after commit 4a4bb874f63741026bd26264c43bb32b1099f060.

Patch / fix

  • gnupg2 Debian 14, Debian 13, Debian 12 2.2.12-1

debian advisories DEBIAN-CVE-2018-1000858

  • gnupg2 Ubuntu 18.04 LTS 2.2.4-1ubuntu1.2

ubuntu advisories UBUNTU-CVE-2018-1000858

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

  • gnupg2 RHEL 8 2.2.20-2.el8
  • gnupg2-smime RHEL 8 2.2.20-2.el8

red hat advisories RHSA-2020:4490

  • gpg2 SLE Module for Basesystem 15 2.2.5-4.6.2

suse advisories SUSE-SU-2019:0023-1

  • gpg2 openSUSE Leap 15.0 2.2.5-lp150.3.6.1

opensuse advisories openSUSE-SU-2019:0020-1

  • gnupg2 AlmaLinux 8 2.2.20-2.el8
  • gnupg2-smime AlmaLinux 8 2.2.20-2.el8

almalinux advisories ALSA-2020:4490

  • gnupg2 Rocky Linux 8 2.2.20-2.el8

rocky linux advisories RLSA-2020:4490

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-2018-1000858 updated cvss 5.4

gnupg2: Cross site request forgery in dirmngr resulting in an information disclosure or denial of service

  • Red Hat Enterprise Linux BaseOS (v. 8) gnupg2 2.2.20-2.el8, gnupg2-smime 2.2.20-2.el8
    fixed: vendor fix RHSA-2020:4490
  • Red Hat Enterprise Linux 5 gnupg2 Red Hat Enterprise Linux 6 gnupg2, gnupg2-smime Red Hat Enterprise Linux 7 gnupg2, gnupg2-smime
    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

Exploit prediction

1.04% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • sektioneins.de https://sektioneins.de/en/advisories/advisory-012018-gnupg-wkd.html 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

Classification

Weakness
  • CWE-352 Cross-Site Request Forgery

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.