CVE-2005-0309: Multiple cross-site scripting (XSS) vulnerabilities in (1) index.php or (2) mod.php in Exponent 0.95 allow rem

Routine

MEDIUM 4.3DOWNGRADE

CVE-2005-0309 is a medium-severity flaw (CVSS 4.3) affecting exponent. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple cross-site scripting (XSS) vulnerabilities in (1) index.php or (2) mod.php in Exponent 0.95 allow remote attackers to inject arbitrary web script or HTML via the module parameter.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Published	2005-01-25
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: exponent

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

Am I affected?

Timeline

2005-01-25 05:00 UTCPublished CVE record published
2026-06-16 22:10 UTCUpdated Record last modified

exponent exponent DOWNGRADE

Affected: 0.95

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.95

1. Check installed version

apt-cache policy exponent || rpm -q exponent || exponent --version

2. No fixed release: DOWNGRADE to a release before 0.95 (Debian / Ubuntu)

apt-cache madison exponent sudo apt install exponent=<VERSION_BEFORE_0.95> sudo apt-mark hold exponent

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

dnf --showduplicates list exponent sudo dnf downgrade exponent-<VERSION_BEFORE_0.95> sudo dnf versionlock add exponent

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.

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-2005-0309?

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

Is CVE-2005-0309 being exploited?

CVE-2005-0309 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-2005-0309 affect?

CVE-2005-0309 affects exponent. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in (1) index.php or (2) mod.php in Exponent 0.95 allow remote attackers to inject arbitrary web script or HTML via the module parameter.

How urgent is CVE-2005-0309?

Priority 32/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

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References

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