CVE-2022-34970

CRITICALNVD 9.89.8—

9.8

Crow before 1.0+4 has a heap-based buffer overflow via the function qs_parse in query_string.h. On successful exploitation this vulnerability allows attackers to remotely execute arbitrary code in the context of the vulnerable service.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 96.1%
KEV: Not listed

Published

August 4, 2022

Last Modified

November 21, 2024

Advisory Details (4)

Auto-updated May 25, 2026

🔬 Proof of concept available. Patch available. Sources: github_pr, github_release.

github_release Patch Available

v1.0+4 Security Patch

Patch available: CrowCpp/Crow v1.0+4

https://github.com/CrowCpp/Crow/releases/tag/v1.0%2B4

github_pr Patch Available

Fixed issue where an index in qs_parse is incorrectly incremented beyond the maximum possible value

Patch available: CrowCpp/Crow v1.1.0 (PR #486 merged 2022-06-28)

https://github.com/CrowCpp/Crow/pull/486

generic🟡 PoC Available

CVE-2022-34970/report.md at master · 0xhebi/CVE-2022-34970 · GitHub

https://github.com/0xhebi/CVE-2022-34970/blob/master/report.md

generic

CWE - CWE-193: Off-by-one Error (4.20)

https://cwe.mitre.org/data/definitions/193.html

Weakness Classification(1)

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

CWE-193Off-by-one Error

Data Freshness Timeline

(refreshed 8× in last 7d / 8× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 17:49 UTCEG score recompute
2026-05-25 17:49 UTCGHSA enrichment
2026-05-24 16:51 UTCepss_batch

Frequently asked(5)

What is CVE-2022-34970?

CVE-2022-34970 is a critical vulnerability published on August 4, 2022. Crow before 1.0+4 has a heap-based buffer overflow via the function qsparse in querystring.h. On successful exploitation this vulnerability allows attackers to remotely execute arbitrary code in the context of the vulnerable service.

When was CVE-2022-34970 disclosed?

CVE-2022-34970 was first published in the National Vulnerability Database on August 4, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-34970 actively exploited?

CVE-2022-34970 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 96.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-34970?

CVE-2022-34970 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2022-34970?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-34970, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-34970

Explore →

Is Your Infrastructure Affected by CVE-2022-34970?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs