7.5

CVE-2020-26160: jwt-go_project jwt-go Improper Authentication

Modified
AliasesUBUNTU-CVE-2020-26160DEBIAN-CVE-2020-26160CGA-482c-hv7m-hh4v
Published 30-09-2020Last modified 04-08-2024

Vulnerability summary

CVE-2020-26160 is a high (CVSS 7.5) Improper Authentication vulnerability in jwt-go_project jwt-go. EPSS estimates a 2.16% chance of exploitation in the next 30 days, higher than 82.2% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 2% (FIRST, 04-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
2.16%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 3
RHSA-2021:2042CGA-6HXX-3PWX-J6MHCGA-HPM9-H769-JFRHCGA-HV4Q-5G38-WJR8

Timeline

  1. 30-09-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

jwt-go before 4.0.0-preview1 allows attackers to bypass intended access restrictions in situations with []string{} for m["aud"] (which is allowed by the specification). Because the type assertion fails, "" is the value of aud. This is a security problem if the JWT token is presented to a service that lacks its own audience check.

CVSS metrics

9 scores · 8 sources · 2 versions

EPSS trend

Probability

2.16%

Chance of exploitation in the next 30 days

Percentile

82%

Versus all other CVEs

30-day change

No change 0.00 pp

From 2.16% on 05-10-2026

05-10-202604-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard6 products
  • dgraph< 24.0.0-r0
  • docker-credential-acr-env< 0.7.0-r26
  • docker-credential-acr-env-fips< 0.7.0-r16
  • gitness< 3.0.0_beta5-r0
  • harbor-2.14-photon-registryAll versions (No fix recorded)
Wolfi3 products
  • dgraph< 24.0.0-r0
  • docker-credential-acr-env< 0.7.0-r26
  • gitness< 3.0.0_beta5-r0
Opensuse2 products
  • telegraf&distro=openSUSE Tumbleweed< 1.19.0-1.2
  • velero-plugin-for-microsoft-azure&distro=openSUSE Tumbleweed< 1.3.1-1.1
Ubuntu2 products
  • golang-github-coreos-discovery-etcd-ioAll versions (No fix recorded)
  • golang-github-dgrijalva-jwt-goAll versions (No fix recorded)
Alpine1 product
  • gitea< 1.14.6-r0
Debian1 product
  • golang-github-dgrijalva-jwt-go< 3.2.0-3
Github.com/dgrijalva1 product
  • jwt-go≥ 0.0.0-20150717181359-44718f8a89b0, ≤ 3.2.0 | ≥ 0.0.0-20150717181359-44718f8a89b0 (No fix recorded)
Github.com/dgrijalva/jwt-go1 product
  • v4< 4.0.0-preview1
Jwt-go_project1 product

9 vendors · 18 products

References

14 links
Show all 14 references