CVE-2015-10004

CVE-2015-10004 is a high-severity vulnerability in Json Web Token Project Json Web Token with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-668.

Key facts

Description

Token validation methods are susceptible to a timing side-channel during HMAC comparison. With a large enough number of requests over a low latency connection, an attacker may use this to determine the expected HMAC.

Frequently asked questions

What is CVE-2015-10004?
Token validation methods are susceptible to a timing side-channel during HMAC comparison. With a large enough number of requests over a low latency connection, an attacker may use this to determine the expected HMAC.
How severe is CVE-2015-10004?
CVE-2015-10004 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2015-10004 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-10004?
CVE-2015-10004 affects Json Web Token Project Json Web Token. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-10004?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2015-10004 published?
CVE-2015-10004 was published on 2022-12-27 and last updated on 2026-06-17.

References

Affected products (1)

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