CVE-2008-1930: The cookie authentication method in WordPress 2.5 relies on a hash of a concatenated string containing USERNAME and EXPIRY_TIME, which allows remote attackers to forge cookies by registering a usernam

high Affects WordPress core. Feed 2026.10.28.3, updated 2026-10-28; published ; advisory modified .

The cookie authentication method in WordPress 2.5 relies on a hash of a concatenated string containing USERNAME and EXPIRY_TIME, which allows remote attackers to forge cookies by registering a usernam

Package
WordPress core WordPress
Affected versions
=2.5
Fixed in
no fix recorded
Severity
high  CVSS 7.5
Exploitation
not on CISA KEV · EPSS 5% (92.3th percentile)
Published
2008-04-28
Source
nvd

References

CWE-287
NVD recordWordPress core advisories

Am I affected?

Find out in one command. phpwarden checks your WordPress install against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# one-time install
pip install phpwarden

# then
phpwarden wordpress /var/www/html

Or keep it checked automatically with the GitHub Action or a nightly cron; see WordPress docs.

Install docs   How findings are ranked

Related advisories