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.
CVE-2020-26160
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(low)
- EPSS
- 80.1%
- KEV
- Not listed
Published
September 30, 2020
Last Modified
November 21, 2024
References (4)
- cve@mitrehttps://github.com/dgrijalva/jwt-go/pull/426
- cve@mitrehttps://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMDGRIJALVAJWTGO-596515
- af854a3a-2127-422b-91ae-364da2661108https://github.com/dgrijalva/jwt-go/pull/426
- af854a3a-2127-422b-91ae-364da2661108https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMDGRIJALVAJWTGO-596515
Vendor Advisories for CVE-2020-26160(4)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- CVE-2020-26160Microsoft Security Response Center (MSRC)
CVE-2020-26160
- RHSA-2021:2438Red Hat Product SecurityMedium
Red Hat Security Advisory: OpenShift Container Platform 4.8.2 bug fix and security update
- RHSA-2021:2041Red Hat Product SecurityMedium
Red Hat Security Advisory: Red Hat OpenShift Container Storage 4.7.0 security, bug fix, and enhancement update
- RHSA-2021:0799Red Hat Product SecurityMedium
Red Hat Security Advisory: OpenShift Virtualization 2.6.0 security and bug fix update
Patch Availability(6)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | cryostat-20-tech-preview/cryostat-rhel8-operator:2.0.0-5 | 2021-12-14 | redhat |
| redhat | openshift4/ose-etcd:v4.8.0-202106152230.p0.git.aefa6bf.assembly.stream | 2021-07-27 | redhat |
| redhat | ocs4/mcg-rhel8-operator:5.7.0-69.85e2026.5.7 | 2021-05-19 | redhat |
| redhat | mcg-0:5.7.0-69.85e2026.5.7.el8 | 2021-05-19 | redhat |
| redhat | openshift4/ose-azure-machine-controllers:v4.7.0-202102130115.p0 | 2021-02-24 | redhat |
| redhat | openshift-serverless-1/svls-must-gather-rhel8:1.13.0-3 | 2021-02-18 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(2 across 1 ecosystem)
Go(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| github.com/dgrijalva/jwt-go | — | — | — |
| github.com/dgrijalva/jwt-go/v4 | — | 4.0.0-preview1 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(4)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Data Freshness Timeline
(refreshed 10× in last 7d / 41× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-12 05:44 UTCEPSS rescore
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- 2026-06-25 13:48 UTCEPSS rescore
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- 2026-06-24 11:50 UTCOSV refresh
- 2026-06-23 21:31 UTCEPSS rescore
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- 2026-06-22 14:23 UTCEPSS rescore
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- 2026-06-07 15:46 UTCOSV refresh
- 2026-06-07 15:23 UTCEPSS rescore
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- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-24 16:48 UTCEPSS rescore
- 2026-05-23 07:08 UTCEG score recompute
- 2026-05-23 07:08 UTCVendor advisory
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Frequently asked(5)
What is CVE-2020-26160?
When was CVE-2020-26160 disclosed?
Is CVE-2020-26160 actively exploited?
What is the CVSS score of CVE-2020-26160?
How do I remediate CVE-2020-26160?
Dependency Blast Radius
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