CVE-2009-0643: Static code injection vulnerability in post.php in Simple PHP News 1.0 final allows remote attackers to inject

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MEDIUM 5.1DOWNGRADE

CVE-2009-0643 is a medium-severity flaw (CVSS 5.1) affecting simple php news. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Static code injection vulnerability in post.php in Simple PHP News 1.0 final allows remote attackers to inject arbitrary PHP code into news.txt via the post parameter, and then execute the code via a direct request to display.php. NOTE: some of these details are obtained from third party information.

Why this priority

EPSS top 8%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	5.1 (Medium)
EPSS exploit chance	4.8% (top 8%)
CISA exploited list	No
Weakness	CWE-94
Published	2009-02-20
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: dminnich

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

Am I affected?

Timeline

2009-02-20 06:47 UTCPublished CVE record published
2026-06-16 23:05 UTCUpdated Record last modified

dminnich simple php news DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy simple-php-news || rpm -q simple-php-news || simple-php-news --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison simple-php-news sudo apt install simple-php-news=<VERSION_BEFORE_1.0> sudo apt-mark hold simple-php-news

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

dnf --showduplicates list simple-php-news sudo dnf downgrade simple-php-news-<VERSION_BEFORE_1.0> sudo dnf versionlock add simple-php-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: Simple PHP News 1.0 - Remote Command Execution

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-2009-0643?

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

Is CVE-2009-0643 being exploited?

CVE-2009-0643 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-2009-0643 affect?

CVE-2009-0643 affects simple php news. Severity is medium (CVSS 5.1). Static code injection vulnerability in post.php in Simple PHP News 1.0 final allows remote attackers to inject arbitrary PHP code into news.txt via the post parameter, and then execute the code via a direct request to display.php. NOTE: so

How urgent is CVE-2009-0643?

Priority 46/100. EPSS top 8%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2009-0610 HIGH 7.5 DOWNGRADE Multiple static code injection vulnerabilities in post.php in Simple PHP News 1.0 final allow remote attackers

References

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