CVE-2026-34501

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-06. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

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

Heap-based Buffer Overflow vulnerability in Apache Portable Runtime Utility redis client.

This issue affects Apache Portable Runtime Utility: from 1.6.0 through 1.6.3.

Users are recommended to upgrade to version 1.6.4, which fixes the issue.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 7, 2026

Advisory Details (2)

Auto-updated Aug 6, 2026
No patch confirmed yet.
generic

oss-security - CVE-2026-34501: Apache Portable Runtime Utility: Heap buffer overflow in APR redis client

http://www.openwall.com/lists/oss-security/2026/08/06/11
generic
https://lists.apache.org/thread/o8h6c7cq86fplxlnry6c3rn9x0ovq8mv

Vendor Advisories for CVE-2026-34501(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(8 across 8 ecosystems)
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
apr-util—1.6.4-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
apr-util—1.6.4-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
apr-util—1.6.4-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
apr-util—1.6.4-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
apr-util1.6.1-5 ... 1.6.4-2 (13 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
apr-util1.6.3-1 ... 1.6.4-2 (9 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
apr-util1.6.3-3, 1.6.3-4, 1.6.4-1, 1.6.4-2——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
apr-util1.6.3-3, 1.6.3-4, 1.6.4-1, 1.6.4-2——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 28× in last 7d / 62× 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.

  1. 2026-08-21 05:03 UTCEG score recompute
  2. 2026-08-21 05:03 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 22:55 UTCEPSS rescore
  5. 2026-08-20 16:15 UTCGHSA enrichment
  6. 2026-08-20 03:27 UTCEG score recompute
  7. 2026-08-20 03:27 UTCGHSA enrichment
  8. 2026-08-19 17:03 UTCEPSS rescore
  9. 2026-08-19 14:39 UTCGHSA enrichment
  10. 2026-08-19 01:36 UTCEG score recompute
  11. 2026-08-19 01:36 UTCGHSA enrichment
  12. 2026-08-18 13:48 UTCEPSS rescore
  13. 2026-08-18 12:48 UTCGHSA enrichment
  14. 2026-08-17 23:29 UTCEG score recompute
  15. 2026-08-17 23:29 UTCGHSA enrichment
  16. 2026-08-17 13:47 UTCEPSS rescore
  17. 2026-08-17 10:39 UTCGHSA enrichment
  18. 2026-08-16 21:52 UTCEG score recompute
  19. 2026-08-16 21:52 UTCGHSA enrichment
  20. 2026-08-16 14:56 UTCEPSS rescore
  21. 2026-08-16 09:04 UTCEG score recompute
  22. 2026-08-16 09:04 UTCGHSA enrichment
  23. 2026-08-16 02:14 UTCEPSS rescore
  24. 2026-08-15 20:16 UTCGHSA enrichment
  25. 2026-08-15 07:28 UTCEG score recompute
Show 37 more
  1. 2026-08-15 07:28 UTCGHSA enrichment
  2. 2026-08-15 01:30 UTCEPSS rescore
  3. 2026-08-14 18:39 UTCGHSA enrichment
  4. 2026-08-14 05:48 UTCEG score recompute
  5. 2026-08-14 05:48 UTCGHSA enrichment
  6. 2026-08-13 22:00 UTCEPSS rescore
  7. 2026-08-13 17:00 UTCGHSA enrichment
  8. 2026-08-13 04:12 UTCGHSA enrichment
  9. 2026-08-12 15:25 UTCEG score recompute
  10. 2026-08-12 15:25 UTCGHSA enrichment
  11. 2026-08-12 13:50 UTCEPSS rescore
  12. 2026-08-12 02:35 UTCGHSA enrichment
  13. 2026-08-11 13:47 UTCEG score recompute
  14. 2026-08-11 13:47 UTCGHSA enrichment
  15. 2026-08-11 00:59 UTCEG score recompute
  16. 2026-08-11 00:59 UTCGHSA enrichment
  17. 2026-08-11 00:00 UTCEPSS rescore
  18. 2026-08-10 12:11 UTCGHSA enrichment
  19. 2026-08-09 23:24 UTCEG score recompute
  20. 2026-08-09 23:24 UTCGHSA enrichment
  21. 2026-08-09 13:46 UTCEPSS rescore
  22. 2026-08-09 10:36 UTCGHSA enrichment
  23. 2026-08-08 21:46 UTCEG score recompute
  24. 2026-08-08 21:46 UTCGHSA enrichment
  25. 2026-08-08 16:37 UTCEPSS rescore
  26. 2026-08-08 08:57 UTCGHSA enrichment
  27. 2026-08-07 20:09 UTCEG score recompute
  28. 2026-08-07 20:09 UTCGHSA enrichment
  29. 2026-08-07 11:07 UTCEG score recompute
  30. 2026-08-07 11:07 UTCGHSA enrichment
  31. 2026-08-06 22:19 UTCEG score recompute▲ 7.50
  32. 2026-08-06 22:19 UTCGHSA enrichment
  33. 2026-08-06 22:15 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  34. 2026-08-06 16:05 UTCGHSA enrichment
  35. 2026-08-06 15:26 UTCNVD update
  36. 2026-08-06 14:44 UTCEG score recompute
  37. 2026-08-06 14:41 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-34501?
CVE-2026-34501 is a high vulnerability published on August 6, 2026. Heap-based Buffer Overflow vulnerability in Apache Portable Runtime Utility redis client. This issue affects Apache Portable Runtime Utility: from 1.6.0 through 1.6.3. Users are recommended to upgrade to version 1.6.4, which fixes the issue.
When was CVE-2026-34501 disclosed?
CVE-2026-34501 was first published in the National Vulnerability Database on August 6, 2026, with the most recent update on August 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34501 actively exploited?
CVE-2026-34501 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.5% of all scored CVEs.
What is the CVSS score of CVE-2026-34501?
CVE-2026-34501 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-34501?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-34501, 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-2026-34501

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