Unauthenticated PHP object injection via deserialization
Published Feb 25, 2025 · Updated Apr 28, 2026
PHP object injection in FBS Flexmls IDX 3.14.27 and earlier allows remote attackers to inject objects through untrusted serialized input. Published records do not identify the affected endpoint, request parameter, or deserialization call that processes the attacker-controlled value. No authentication or user interaction is required; further impact depends on a usable PHP object chain from WordPress, another plugin, or the active theme.
Summary
What happened
PHP object injection in FBS Flexmls IDX 3.14.27 and earlier allows remote attackers to inject objects through untrusted serialized input. Published records do not identify the affected endpoint, request parameter, or deserialization call that processes the attacker-controlled value. No authentication or user interaction is required; further impact depends on a usable PHP object chain from WordPress, another plugin, or the active theme.
The record
- CVE
- CVE-2025-26900
- Published
- Feb 25, 2025
- Updated
- Apr 28, 2026
- Vendor
- FBS
- Product
- Flexmls IDX
- Classifications
- CWE-502, CAPEC-586, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 25, 2025CVE publishedPublication date reported by the CVE source.
- Apr 28, 2026Record 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=0 <=3.14.27 changes=[{"at":"3.14.28","status":"unaffected"}]
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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