CVE-2007-3131: Cross-site scripting (XSS) vulnerability in add_comment.php in Light Blog 4.1 before 20070606 allows remote at

Routine

MEDIUM 4.3DOWNGRADE

CVE-2007-3131 is a medium-severity flaw (CVSS 4.3) affecting light blog. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in add_comment.php in Light Blog 4.1 before 20070606 allows remote attackers to inject arbitrary web script or HTML via the id 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 34%)
CISA exploited list	No
Published	2007-06-08
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: public warehouse

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

Am I affected?

Timeline

2007-06-08 16:30 UTCPublished CVE record published
2026-06-16 22:41 UTCUpdated Record last modified

public warehouse light blog DOWNGRADE

Affected: 4.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.1

1. Check installed version

apt-cache policy light-blog || rpm -q light-blog || light-blog --version

2. No fixed release: DOWNGRADE to a release before 4.1 (Debian / Ubuntu)

apt-cache madison light-blog sudo apt install light-blog=<VERSION_BEFORE_4.1> sudo apt-mark hold light-blog

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

dnf --showduplicates list light-blog sudo dnf downgrade light-blog-<VERSION_BEFORE_4.1> sudo dnf versionlock add light-blog

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-2007-3131?

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

Is CVE-2007-3131 being exploited?

CVE-2007-3131 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-2007-3131 affect?

CVE-2007-3131 affects light blog. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in add_comment.php in Light Blog 4.1 before 20070606 allows remote attackers to inject arbitrary web script or HTML via the id parameter.

How urgent is CVE-2007-3131?

Priority 37/100. Public exploit reference

Software pages

PHP vulnerabilities

References

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