CVE-2026-41134

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.8 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 93% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Kiota is an OpenAPI based HTTP Client code generator. Versions prior to 1.31.1 are affected by a code-generation literal injection vulnerability in multiple writer sinks (for example: serialization/deserialization keys, path/query parameter mappings, URL template metadata, enum/property metadata, and default value emission). When malicious values from an OpenAPI description are emitted into generated source without context-appropriate escaping, an attacker can break out of string literals and inject additional code into generated clients. This issue is only practically exploitable when the OpenAPI description used for generation is from an untrusted source, or a normally trusted OpenAPI description has been compromised/tampered with. Only generating from trusted, integrity-protected API descriptions significantly reduces the risk. To remediate the issue, upgrade Kiota to 1.31.1 or later and regenerate/refresh existing generated clients as a precaution. Refreshing generated clients ensures previously generated vulnerable code is replaced with hardened output.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
34.2%
KEV
Not listed

Published

April 22, 2026

Last Modified

May 14, 2026

Advisory Details (1)

Auto-updated May 14, 2026
Patch available. Sources: github.
github Patch Available

CVE Advisory (CVE-2026-41134): Code Generation Literal Injection in Kiota · Advisory · microsoft/kiota · GitHub

https://github.com/microsoft/kiota/security/advisories/GHSA-2hx3-vp6r-mg3f

Affected Packages

(1 across 1 ecosystem)
NuGet(1)
PackageVulnerable rangeFixed inDependents
kiota0.1.01.31.1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 37× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 104 total refreshes for this CVE.

  1. 2026-07-16 17:03 UTCEPSS rescore
  2. 2026-07-15 16:57 UTCEPSS rescore
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  1. 2026-06-25 13:49 UTCEPSS rescore
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  3. 2026-06-23 21:33 UTCEPSS rescore
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  6. 2026-06-21 14:56 UTCEPSS rescore
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  14. 2026-06-15 17:49 UTCEPSS rescore
  15. 2026-06-15 02:33 UTCEG score recompute
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  17. 2026-06-13 23:00 UTCEPSS rescore
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  20. 2026-06-12 03:36 UTCEG score recompute
  21. 2026-06-11 14:32 UTCEG score recompute
  22. 2026-06-11 14:00 UTCEPSS rescore
  23. 2026-06-10 22:18 UTCEPSS rescore
  24. 2026-06-10 18:46 UTCEG score recompute
  25. 2026-06-10 13:22 UTCEPSS rescore
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  27. 2026-06-10 05:42 UTCEG score recompute
  28. 2026-06-09 16:38 UTCEG score recompute
  29. 2026-06-09 03:35 UTCEG score recompute
  30. 2026-06-08 14:17 UTCEPSS rescore
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  32. 2026-06-08 10:57 UTCEG score recompute
  33. 2026-06-07 21:52 UTCEG score recompute
  34. 2026-06-07 15:25 UTCEPSS rescore
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  36. 2026-06-07 08:48 UTCEG score recompute
  37. 2026-06-06 19:42 UTCEG score recompute
  38. 2026-06-06 13:47 UTCEPSS rescore
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  40. 2026-06-06 05:55 UTCEG score recompute
  41. 2026-06-05 22:47 UTCEPSS rescore
  42. 2026-06-05 16:44 UTCEG score recompute
  43. 2026-06-05 06:10 UTCEPSS rescore
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  45. 2026-06-05 03:40 UTCEG score recompute
  46. 2026-06-04 14:36 UTCEG score recompute
  47. 2026-06-04 13:12 UTCEPSS rescore
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  49. 2026-06-04 01:31 UTCEG score recompute
  50. 2026-06-03 12:27 UTCEG score recompute
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  52. 2026-06-02 16:44 UTCEG score recompute
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  55. 2026-06-01 13:52 UTCEPSS rescore
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  58. 2026-05-31 22:30 UTCEPSS rescore
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  60. 2026-05-31 00:16 UTCEPSS rescore
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  63. 2026-05-29 13:44 UTCEPSS rescore
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  65. 2026-05-28 13:44 UTCEPSS rescore
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  68. 2026-05-27 13:40 UTCEPSS rescore
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  71. 2026-05-26 13:44 UTCEPSS rescore
  72. 2026-05-26 07:18 UTCEPSS rescore
  73. 2026-05-26 07:18 UTCEPSS rescore
  74. 2026-05-23 00:08 UTCEG score recompute
  75. 2026-05-20 22:38 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-41134?
CVE-2026-41134 is a high vulnerability published on April 22, 2026. Kiota is an OpenAPI based HTTP Client code generator. Versions prior to 1.31.1 are affected by a code-generation literal injection vulnerability in multiple writer sinks (for example: serialization/deserialization keys, path/query parameter mappings, URL template metadata, enum/property metadata,…
When was CVE-2026-41134 disclosed?
CVE-2026-41134 was first published in the National Vulnerability Database on April 22, 2026, with the most recent update on May 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41134 actively exploited?
CVE-2026-41134 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 34.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-41134?
CVE-2026-41134 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-41134?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41134, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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