CVE-2018-1000858

Exp

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.

Published: 2018-12-20 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-1000858 is rated High Exploit Risk (71.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.04%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2018-1000858

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-1000858

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.22% 1.04% +0.82%
2 2025-08-10 0.13% 0.22% +0.09%
3 2025-03-30 — 0.13% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-1000858

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2018-1000858

OS Trackers for CVE-2018-1000858

vendor priority summary link
alpine high CVE-2018-1000858: 1 source package rows (gnupg); 5 state rows across 5 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 0, open 5. https://security.alpinelinux.org/vuln/CVE-2018-1000858
debian unimportant CVE-2018-1000858 unimportant priority: Debian including 2 source packages (gnupg1, gnupg2), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 10. https://security-tracker.debian.org/tracker/CVE-2018-1000858
redhat medium — https://access.redhat.com/security/cve/CVE-2018-1000858
suse medium CVE-2018-1000858 severity moderate: SUSE including 302 source package names (0.1.0:gpg2-2.2.5-4.6.2, 0.1.75:gpg2-2.2.5-4.6.2, …), 355 product×package rows across 91 product lines (Container caasp/v4/389-ds, Container caasp/v4/busybox, … (91 product lines)): Fixed 169, Known Affected 157, Known Not Affected 29. https://www.suse.com/security/cve/CVE-2018-1000858/
ubuntu medium CVE-2018-1000858 medium priority: Ubuntu including 1 source packages (gnupg2), 5 status rows across 5 suites (bionic, cosmic, trusty, upstream, xenial): released 3, DNE 1, not-affected 1. https://ubuntu.com/security/CVE-2018-1000858

Affected software / configurations for CVE-2018-1000858

Vendor Product Version Raw CPE
gnupg gnupg >= 2.1.12, <= 2.2.11 cpe:2.3:a:gnupg:gnupg:*:*:*:*:*:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 18.10 cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*

References for CVE-2018-1000858

cvelogic Threat Intelligence