CVE-2010-0455: Cross-site scripting (XSS) vulnerability in forum/viewtopic.php in PunBB 1.3 allows remote attackers to inject

Routine

MEDIUM 4.3DOWNGRADE

CVE-2010-0455 is a medium-severity flaw (CVSS 4.3) affecting punbb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in forum/viewtopic.php in PunBB 1.3 allows remote attackers to inject arbitrary web script or HTML via the pid parameter.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-79
Published	2010-01-28
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: punbb

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

Am I affected?

Timeline

2010-01-28 20:30 UTCPublished CVE record published
2026-06-16 23:16 UTCUpdated Record last modified

punbb punbb DOWNGRADE

Affected: 1.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.3 (Debian / Ubuntu)

apt-cache madison punbb sudo apt install punbb=<VERSION_BEFORE_1.3> sudo apt-mark hold punbb

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

dnf --showduplicates list punbb sudo dnf downgrade punbb-<VERSION_BEFORE_1.3> sudo dnf versionlock add punbb

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-2010-0455?

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

Is CVE-2010-0455 being exploited?

CVE-2010-0455 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-2010-0455 affect?

CVE-2010-0455 affects punbb. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in forum/viewtopic.php in PunBB 1.3 allows remote attackers to inject arbitrary web script or HTML via the pid parameter.

How urgent is CVE-2010-0455?

Priority 36/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2021-28968 MEDIUM 5.4 UPGRADE An issue was discovered in PunBB before 1.4.6
CVE-2011-3371 MEDIUM 4.3 UPGRADE Multiple cross-site scripting (XSS) vulnerabilities in include/functions.php in PunBB before 1.3.6 allow remot
CVE-2009-4894 MEDIUM 4.3 UPGRADE Multiple cross-site scripting (XSS) vulnerabilities in profile.php in PunBB before 1.3.4 allow remote attacker
CVE-2008-7241 MEDIUM 6.8 UPGRADE Cross-site request forgery (CSRF) vulnerability in PunBB before 1.2.17 allows remote attackers to hijack the a
CVE-2008-5435 MEDIUM 4.3 UPGRADE Cross-site scripting (XSS) vulnerability in moderate.php in PunBB before 1.3.1 allows remote attackers to inje

References

← Back to latest CVEs