CVE-2002-0463: home.php in ARSC (Really Simple Chat) 1.0.1 and earlier allows remote attackers to determine the full pathname

Routine

MEDIUM 5.0DOWNGRADE

CVE-2002-0463 is a medium-severity flaw (CVSS 5.0) affecting arsc really simple chat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

home.php in ARSC (Really Simple Chat) 1.0.1 and earlier allows remote attackers to determine the full pathname of the web server via an invalid language in the arsc_language parameter, which leaks the pathname in an error message.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.5% (top 25%)
CISA exploited list	No
Published	2002-08-12
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: arsc really simple chat

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

Am I affected?

Timeline

2002-08-12 04:00 UTCPublished CVE record published
2026-06-16 21:57 UTCUpdated Record last modified

arsc really simple chat arsc really simple chat DOWNGRADE

Affected: 1.0 · 1.0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy arsc-really-simple-chat || rpm -q arsc-really-simple-chat || arsc-really-simple-chat --version

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

apt-cache madison arsc-really-simple-chat sudo apt install arsc-really-simple-chat=<VERSION_BEFORE_1.0> sudo apt-mark hold arsc-really-simple-chat

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

dnf --showduplicates list arsc-really-simple-chat sudo dnf downgrade arsc-really-simple-chat-<VERSION_BEFORE_1.0> sudo dnf versionlock add arsc-really-simple-chat

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-2002-0463?

arsc really simple chat: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2002-0463 being exploited?

CVE-2002-0463 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-2002-0463 affect?

CVE-2002-0463 affects arsc really simple chat. Severity is medium (CVSS 5.0). home.php in ARSC (Really Simple Chat) 1.0.1 and earlier allows remote attackers to determine the full pathname of the web server via an invalid language in the arsc_language parameter, which leaks the pathname in an error message.

How urgent is CVE-2002-0463?

Priority 36/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

References

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