CVE-2025-5881: A vulnerability was found in code-projects Chat System up to 1.0 and classified as critical

Routine

MEDIUM 6.3DOWNGRADE

CVE-2025-5881 is a medium-severity flaw (CVSS 6.3) affecting chat system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in code-projects Chat System up to 1.0 and classified as critical. This issue affects some unknown processing of the file /user/confirm_password.php. The manipulation of the argument cid leads to sql injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-74, CWE-89
Published	2025-06-09
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: fabian

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-06-09 14:15 UTCPublished CVE record published
2026-06-17 09:48 UTCUpdated Record last modified

fabian chat system 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 chat-system || rpm -q chat-system || chat-system --version

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

apt-cache madison chat-system sudo apt install chat-system=<VERSION_BEFORE_1.0> sudo apt-mark hold chat-system

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

dnf --showduplicates list chat-system sudo dnf downgrade chat-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add chat-system

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-2025-5881?

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

Is CVE-2025-5881 being exploited?

CVE-2025-5881 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-2025-5881 affect?

CVE-2025-5881 affects chat system. Severity is medium (CVSS 6.3). A vulnerability was found in code-projects Chat System up to 1.0 and classified as critical. This issue affects some unknown processing of the file /user/confirm_password.php. The manipulation of the argument cid leads to sql injection. The

How urgent is CVE-2025-5881?

Priority 38/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-7511 MEDIUM 6.3 DOWNGRADE A vulnerability was found in code-projects Chat System 1.0 and classified as critical
CVE-2025-7189 MEDIUM 6.3 DOWNGRADE A vulnerability, which was classified as critical, has been found in code-projects Chat System 1.0
CVE-2025-7188 MEDIUM 6.3 DOWNGRADE A vulnerability classified as critical was found in code-projects Chat System 1.0
CVE-2025-7187 MEDIUM 6.3 DOWNGRADE A vulnerability classified as critical has been found in code-projects Chat System 1.0
CVE-2025-7186 MEDIUM 6.3 DOWNGRADE A vulnerability was found in code-projects Chat System 1.0

References

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