CVE-2021-28490

CVE-2021-28490 is a high-severity vulnerability in Owasp Csrfguard with a CVSS 3.x base score of 8.8. 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-352.

Key facts

Description

In OWASP CSRFGuard through 3.1.0, CSRF can occur because the CSRF cookie may be retrieved by using only a session token.

Frequently asked questions

What is CVE-2021-28490?
In OWASP CSRFGuard through 3.1.0, CSRF can occur because the CSRF cookie may be retrieved by using only a session token.
How severe is CVE-2021-28490?
CVE-2021-28490 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-28490 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-28490?
CVE-2021-28490 primarily affects Owasp Csrfguard. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-28490?
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-2021-28490 published?
CVE-2021-28490 was published on 2021-08-19 and last updated on 2026-06-17.

References

Affected products (2)

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