How severe is CVE-2021-25994?

CVE-2021-25994 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-2021-25994 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-25994?

CVE-2021-25994 affects Userfrosting. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-25994?

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-2021-25994 published?

CVE-2021-25994 was published on 2022-01-03 and last updated on 2026-06-17.

CVE-2021-25994

CVE-2021-25994 is a high-severity vulnerability in Userfrosting 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-74.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Userfrosting
Published: 2022-01-03
Last modified: 2026-06-17

Description

In Userfrosting, versions v0.3.1 to v4.6.2 are vulnerable to Host Header Injection. By luring a victim application user to click on a link, an unauthenticated attacker can use the “forgot password” functionality to reset the victim’s password and successfully take over their account.

Frequently asked questions

What is CVE-2021-25994?: In Userfrosting, versions v0.3.1 to v4.6.2 are vulnerable to Host Header Injection. By luring a victim application user to click on a link, an unauthenticated attacker can use the “forgot password” functionality to reset the victim’s password and successfully take over their account.
How severe is CVE-2021-25994?: CVE-2021-25994 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-2021-25994 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-25994?: CVE-2021-25994 affects Userfrosting. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-25994?: 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-2021-25994 published?: CVE-2021-25994 was published on 2022-01-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:userfrosting:userfrosting:*:*:*:*:*:*:*:*

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