How severe is CVE-2002-0491?

CVE-2002-0491 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2002-0491 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2002-0491?

CVE-2002-0491 affects Alguest. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2002-0491?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2002-0491 published?

CVE-2002-0491 was published on 2002-08-12 and last updated on 2026-06-16.

CVE-2002-0491

CVE-2002-0491 is a critical-severity vulnerability in Alguest with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Alguest
Published: 2002-08-12
Last modified: 2026-06-16

Description

admin.php in AlGuest 1.0 guestbook checks for the existence of the admin cookie to authenticate the AlGuest administrator, which allows remote attackers to bypass the authentication and gain privileges by setting the admin cookie to an arbitrary value.

Frequently asked questions

What is CVE-2002-0491?: admin.php in AlGuest 1.0 guestbook checks for the existence of the admin cookie to authenticate the AlGuest administrator, which allows remote attackers to bypass the authentication and gain privileges by setting the admin cookie to an arbitrary value.
How severe is CVE-2002-0491?: CVE-2002-0491 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2002-0491 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-0491?: CVE-2002-0491 affects Alguest. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2002-0491?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2002-0491 published?: CVE-2002-0491 was published on 2002-08-12 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:alguest:alguest:1.0:*:*:*:*:*:*:*