Administrator-session script execution via unescaped cache keys
Published Jun 29, 2026 · Updated Jun 29, 2026
Stored XSS in PerfOps One APCu Manager before 4.5.0 allows remote attackers to execute JavaScript in an administrator session. The Tools page writes attacker-influenced APCu cache keys into checkbox values, spans, and links without output escaping. Exploitation requires the persistent object-cache backend, a second plugin that creates an unsanitized key from an unauthenticated request, and an administrator to open the Tools page.
Summary
What happened
Stored XSS in PerfOps One APCu Manager before 4.5.0 allows remote attackers to execute JavaScript in an administrator session. The Tools page writes attacker-influenced APCu cache keys into checkbox values, spans, and links without output escaping. Exploitation requires the persistent object-cache backend, a second plugin that creates an unsanitized key from an unauthenticated request, and an administrator to open the Tools page.
The record
- CVE
- CVE-2026-10083
- Published
- Jun 29, 2026
- Updated
- Jun 29, 2026
- Vendor
- PerfOps One
- Product
- APCu Manager
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 29, 2026CVE publishedPublication date reported by the CVE source.
- Jun 29, 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 <4.5.0
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
- WPScan cache-key pollution proof of conceptproof of concept · validated
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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