CVE-2023-2883: Authorization Bypass Through User-Controlled Key vulnerability in CBOT Chatbot allows Authentication Abuse, Au

Q: How do I fix CVE-2023-2883?

cbot core: upgrade to 4.0.3.4; cbot panel: upgrade to 4.0.3.7. Exact commands for each OS are on this page.

Q: Is CVE-2023-2883 being exploited?

CVE-2023-2883 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-2883 affect?

CVE-2023-2883 affects cbot core, cbot panel. Severity is high (CVSS 8.8). Authorization Bypass Through User-Controlled Key vulnerability in CBOT Chatbot allows Authentication Abuse, Authentication Bypass. This issue affects Chatbot: before Core: v4.0.3.4 Panel: v4.0.3.7.

This month

HIGH 8.8UPGRADEUPGRADE

CVE-2023-2883 is a high-severity flaw (CVSS 8.8) affecting cbot core, cbot panel. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Authorization Bypass Through User-Controlled Key vulnerability in CBOT Chatbot allows Authentication Abuse, Authentication Bypass. This issue affects Chatbot: before Core: v4.0.3.4 Panel: v4.0.3.7.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-639
Published	2023-05-25
Last modified	2026-06-17

Publisher (CNA): Computer Emergency Response Team of the Republic of Turkey · Vendor: cbot

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

Am I affected?

Timeline

2023-05-25 09:15 UTCPublished CVE record published
2026-06-17 05:53 UTCUpdated Record last modified

cbot cbot core UPGRADE

Affected: < 4.0.3.4

Fixed in: 4.0.3.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy cbot-core || rpm -q cbot-core || cbot-core --version

2. UPGRADE to 4.0.3.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade cbot-core

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cbot-core

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

cbot cbot panel UPGRADE

Affected: < 4.0.3.7

Fixed in: 4.0.3.7

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy cbot-panel || rpm -q cbot-panel || cbot-panel --version

2. UPGRADE to 4.0.3.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade cbot-panel

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cbot-panel

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2023-2883?

cbot core: upgrade to 4.0.3.4; cbot panel: upgrade to 4.0.3.7. Exact commands for each OS are on this page.

Is CVE-2023-2883 being exploited?

CVE-2023-2883 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-2023-2883 affect?

CVE-2023-2883 affects cbot core, cbot panel. Severity is high (CVSS 8.8). Authorization Bypass Through User-Controlled Key vulnerability in CBOT Chatbot allows Authentication Abuse, Authentication Bypass. This issue affects Chatbot: before Core: v4.0.3.4 Panel: v4.0.3.7.

How urgent is CVE-2023-2883?

Priority 44/100. High severity

Related CVEs

CVE-2023-2887 CRITICAL 9.8 UPGRADE UPGRADE Authentication Bypass by Spoofing vulnerability in CBOT Chatbot allows Authentication Bypass. This issue affe
CVE-2023-2886 MEDIUM 4.3 UPGRADE UPGRADE Missing Origin Validation in WebSockets vulnerability in CBOT Chatbot allows Content Spoofing Via Application
CVE-2023-2885 HIGH 8.1 UPGRADE UPGRADE Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in CBOT
CVE-2023-2884 CRITICAL 9.8 UPGRADE UPGRADE Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG), Use of Insufficiently Random Values vulne
CVE-2023-2882 CRITICAL 9.8 UPGRADE UPGRADE Generation of Incorrect Security Tokens vulnerability in CBOT Chatbot allows Token Impersonation, Privilege Ab

References

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