CVE-2020-25864

HashiCorp Consul and Consul Enterprise up to version 1.9.4 key-value (KV) raw mode was vulnerable to cross-site scripting. Fixed in 1.9.5, 1.8.10 and 1.7.14.

Published: 2021-04-20 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-25864 is rated Moderate Risk (54/100): CVSS Medium severity, with high exploitation likelihood (EPSS 76.70%, 99th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2020-25864

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 2026-05-29 83.34% 76.70% -6.64%
2 2026-04-12 84.02% 83.34% -0.68%
3 2026-03-31 — 84.02% —

Full EPSS history (56 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-25864

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.1 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N 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:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 2.7 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N 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:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2020-25864

GitHub Security Advisory for CVE-2020-25864

GHSA-8xmx-h8rq-h94j · Severity: medium · Ecosystem: go — HashiCorp Consul Cross-site Scripting vulnerability

OS Trackers for CVE-2020-25864

vendor priority summary link
alpine medium CVE-2020-25864: 1 source package rows (consul); 3 state rows across 3 repos (3.17-community, 3.18-community, edge-community); fixed 3, open 0. https://security.alpinelinux.org/vuln/CVE-2020-25864
debian not yet assigned CVE-2020-25864 not yet assigned priority: Debian including 1 source packages (consul), 1 status rows across 1 suites (bullseye): resolved 1. https://security-tracker.debian.org/tracker/CVE-2020-25864
gentoo low CVE-2020-25864: 1 GLSA(s) (202208-09), 1 atom(s) (app-admin/consul); latest impact low. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2020-25864
redhat medium — https://access.redhat.com/security/cve/CVE-2020-25864
ubuntu medium CVE-2020-25864 medium priority: Ubuntu including 1 source packages (consul), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 7, ignored 4, needs-triage 4, not-affected 1. https://ubuntu.com/security/CVE-2020-25864

Affected software / configurations for CVE-2020-25864

Vendor Product Version Raw CPE
hashicorp consul < 1.7.14 cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*
hashicorp consul < 1.7.14 cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*
hashicorp consul >= 1.8.0, < 1.8.10 cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*
hashicorp consul >= 1.8.0, < 1.8.10 cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*
hashicorp consul >= 1.9.0, < 1.9.5 cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*
hashicorp consul >= 1.9.0, < 1.9.5 cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*

References for CVE-2020-25864

cvelogic Threat Intelligence