Administrator account takeover via reflected class parameter
Published Apr 4, 2023 · Updated Feb 13, 2025
Reflected XSS in VitalPBX 3.2.3-8 allows remote attackers to steal an administrator's session through a malicious link. The root page inserts the class query parameter into markup without neutralization, letting an image error handler read the sid cookie and send it off-site. The attacker needs no account, but an authenticated administrator must open the crafted URL; the stolen session grants control of that administrator account.
Summary
What happened
Reflected XSS in VitalPBX 3.2.3-8 allows remote attackers to steal an administrator's session through a malicious link. The root page inserts the class query parameter into markup without neutralization, letting an image error handler read the sid cookie and send it off-site. The attacker needs no account, but an authenticated administrator must open the crafted URL; the stolen session grants control of that administrator account.
The record
- CVE
- CVE-2023-0486
- Published
- Apr 4, 2023
- Updated
- Feb 13, 2025
- Vendor
- VitalPBX
- Product
- VitalPBX
- Classifications
- CWE-79, T1539
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 4, 2023CVE publishedPublication date reported by the CVE source.
- Feb 13, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=3.2.3-8
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Fluid Attacks reflected-XSS session theft proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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