CVE-2020-10594Network attack vector

Authentication bypass via unchecked blacklisted token refresh

Published Mar 15, 2020 · Updated Aug 4, 2024

Authentication bypass in drf-jwt 1.15.x before 1.15.1 allows remote attackers to obtain working tokens from invalidated JWTs. The refresh path's check_payload function decodes and renews a supplied JWT without consulting BlacklistedToken records, so token revocation is not enforced. Exploitation requires refresh and blacklist support to be enabled and possession of a blacklisted token, restoring the token holder's application access.

CVSS severity9.3
Critical
EPSS probability1.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in drf-jwt 1.15.x before 1.15.1 allows remote attackers to obtain working tokens from invalidated JWTs. The refresh path's check_payload function decodes and renews a supplied JWT without consulting BlacklistedToken records, so token revocation is not enforced. Exploitation requires refresh and blacklist support to be enabled and possession of a blacklisted token, restoring the token holder's application access.

The record

CVE
CVE-2020-10594
Published
Mar 15, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 15, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.3GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
5.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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