authlib: Authlib: Signature verification bypass via malicious JWT allows unauthorized access
cve CVE-2026-28802 2 sources, 2 claims · Watch
Red Hat writes:
authlib: Authlib: Signature verification bypass via malicious JWT allows unauthorized access the claim
authlib: Authlib: Signature verification bypass via malicious JWT allows unauthorized access the claim
What it is to other things
| affects | authlib/authlib NVD |
| made_by | authlib NVD |
What each source says
| Property | Source | Said | Means here | ||||
|---|---|---|---|---|---|---|---|
| Cvss cvss conflict | NVD | 9.8receipt
What the source handed over{
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{
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}
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} | — | ||||
| Cvss cvss conflict | Red Hat | 9.1receipt
What the source handed over{
"CVE": "CVE-2026-28802",
"CWE": "CWE-347",
"advisories": [
"RHSA-2026:6309",
"RHSA-2026:6404",
"RHSA-2026:4942",
"RHSA-2026:5168",
"RHSA-2026:19375",
"RHSA-2026:5665",
"RHSA-2026:6568"
],
"affected_packages": [
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"quay/quay-rhel9:1779204086",
"quay/quay-rhel8:1773971077",
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"cvss3_score": "9.1",
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"resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-28802.json",
"severity": "important"
} | — | ||||
| Cwe cwe | Red Hat | CWE-347receipt
What the source handed over{
"CVE": "CVE-2026-28802",
"CWE": "CWE-347",
"advisories": [
"RHSA-2026:6309",
"RHSA-2026:6404",
"RHSA-2026:4942",
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"RHSA-2026:5665",
"RHSA-2026:6568"
],
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"resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-28802.json",
"severity": "important"
} | — | ||||
| Packages packages | Red Hat | ansible-automation-platform-26/lightspeed-chatbot-rhel9:1774417022, quay/quay-rhel8:1773771962, quay/quay-rhel9:1779204086, quay/quay-rhel8:1773971077, quay/quay-rhel8:1773936323, quay/quay-rhel8:1775169219receipt
What the source handed over{
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"CWE": "CWE-347",
"advisories": [
"RHSA-2026:6309",
"RHSA-2026:6404",
"RHSA-2026:4942",
"RHSA-2026:5168",
"RHSA-2026:19375",
"RHSA-2026:5665",
"RHSA-2026:6568"
],
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"resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-28802.json",
"severity": "important"
} | — | ||||
| Product product | NVD | authlibreceipt
What the source handed over{
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],
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| Severity severity | Red Hat | important A flaw that can easily compromise confidentiality, integrity or availability. receipt
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| Status status | NVD | Modifiedreceipt
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} | — | ||||
| Vendor vendor | NVD | authlibreceipt
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} | — |
vulnerability
| authlib: Authlib: Signature verification bypass via malicious JWT allows unauthorized access zetlyn/cve-redhat · 2026-03-06 | cvss 9.1 cwe CWE-347 packages ansible-automation-platform-26/lightspeed-chatbot-rhel9:1774417022, quay/quay-rhel8:1773771962, quay/quay-rhel9:1779204086, quay/quay-rhel8:1773971077, quay/quay-rhel8:1773936323, quay/quay-rhel8:1775169219 severity important | source |
| Authlib is a Python library which builds OAuth and OpenID Connect servers. From version 1.6.5 to before version 1.6.7, previous tests involving passing a malicious JWT containing alg: none and an empty signature was passing the signature verification step without any changes to the application code when a failure was expected.. This issue has been patched in version 1.6.7. zetlyn/cve-nvd · 2026-03-06 | cvss 9.8 product authlib status Modified vendor authlib | source |