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VulnerabilityPublished Updated

CVE-2023-51336: a CSV File · Improper Neutralization of Formula Elements

Source CVE Database V5

0

Not known to be exploited · CVSS 8.8 High.

Data as of 26 Oct 2026, 15:59 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.6% chance of exploitation in 30 days – higher than 50% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 Feb 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

AI-suggested

European organizations should immediately audit their use of PHPJabbers Meeting Room Booking System v1.0 and restrict access to the Languages section and CSV export functionality to trusted administrators only. Implement strict input validation and sanitization on all user-supplied data fields, especially those used in CSV generation, to neutralize any formula injection attempts. Until an official patch is released, consider disabling CSV export features or filtering out potentially dangerous characters (e.g., '=', '+', '-', '@') at the application or network level. Employ endpoint protection solutions capable of detecting and blocking malicious spreadsheet macros or code execution triggered by CSV files. Conduct user awareness training to avoid opening untrusted CSV files. Monitor logs for unusual activities related to CSV exports or system options modifications. Engage with PHPJabbers support for timely patch deployment once available and apply security updates promptly. Additionally, implement network segmentation and least privilege principles to limit potential lateral movement if exploitation occurs.

Description

PHPJabbers Meeting Room Booking System v1.0 is vulnerable to CSV Injection vulnerability which allows an attacker to execute remote code. The vulnerability exists due to insufficient input validation on Languages section Labels any parameters field in System Options that is used to construct CSV file.

References

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