CVE-2026-59859GHSA-JQWH-526H-C92J
Kiota: Code Generation Literal Injection in the PHP Generator
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 1.31.1, 1.29.1, 1.32.4
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.4, Kiota's PHP generator embedded OpenAPI description, default fields, property names, and other schema-derived strings into PHP double-quoted literals through SanitizeDoubleQuote() in Writers/StringExtensions.cs without escaping $, allowing attacker-controlled ${...}, $var, or {$obj->prop} interpolation constructs to inject arbitrary PHP code into generated model and request-builder classes. This issue is fixed in version 1.29.1 and 1.32.4.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- microsoft kiota
From 1.30.0 · fixed in 1.31.1; fixed in 1.29.1
- Microsoft.OpenApi.KiotaNuGet
From 1.30.0 · fixed in 1.32.4
- Microsoft.OpenApi.Kiota.BuilderNuGet
From 1.30.0 · fixed in 1.32.4
- Microsoft.OpenApi.KiotaNuGet
fixed in 1.29.1
- Microsoft.OpenApi.Kiota.BuilderNuGet
fixed in 1.29.1