CVE-2008-6664: action.php in SH-News 3.0 allows remote attackers to bypass authentication and gain administrator privileges b

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HIGH 7.5DOWNGRADE

CVE-2008-6664 is a high-severity flaw (CVSS 7.5) affecting sh-news. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

action.php in SH-News 3.0 allows remote attackers to bypass authentication and gain administrator privileges by setting the shuser and shpass cookies to non-zero values.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.5% (top 15%)
CISA exploited list	No
Weakness	CWE-287
Published	2009-04-08
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: yarck

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2009-04-08 10:30 UTCPublished CVE record published
2026-06-16 23:02 UTCUpdated Record last modified

yarck sh-news DOWNGRADE

Affected: 3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

1. Check installed version

apt-cache policy sh-news || rpm -q sh-news || sh-news --version

2. No fixed release: DOWNGRADE to a release before 3.0 (Debian / Ubuntu)

apt-cache madison sh-news sudo apt install sh-news=<VERSION_BEFORE_3.0> sudo apt-mark hold sh-news

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list sh-news sudo dnf downgrade sh-news-<VERSION_BEFORE_3.0> sudo dnf versionlock add sh-news

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: SH-News 3.0 - Insecure Cookie Handling

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2008-6664?

sh-news: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2008-6664 being exploited?

CVE-2008-6664 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2008-6664 affect?

CVE-2008-6664 affects sh-news. Severity is high (CVSS 7.5). action.php in SH-News 3.0 allows remote attackers to bypass authentication and gain administrator privileges by setting the shuser and shpass cookies to non-zero values.

How urgent is CVE-2008-6664?

Priority 52/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

References

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