CVE-2026-34501

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM 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 — 4 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: 0.5%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
41st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 6, 2026

Last Modified

August 7, 2026

Advisory Details (2)

Auto-updated Aug 6, 2026
Patch available.
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(6)

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

Patch Availability(5)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibaprutil1-ldap (1.5.3-1ubuntu0.1~esm3) @ trusty2026-10-04ubuntu
redhatapr-util-0:1.6.1-9.el8_10.12026-09-21redhat
redhatapr-util-0:1.6.1-23.el9_8.12026-09-10redhat
redhatapr-util-0:1.6.3-23.el10_2.12026-09-10redhat
redhatapr-util-main-1.6.5-1.hum12026-08-22redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(8 across 8 ecosystems)
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
apr-util—
  • 1.6.0 up to 1.6.4-r0: fixed in 1.6.4-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
apr-util—
  • 1.6.0 up to 1.6.4-r0: fixed in 1.6.4-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
apr-util—
  • 1.6.0 up to 1.6.4-r0: fixed in 1.6.4-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
apr-util—
  • 1.6.0 up to 1.6.4-r0: fixed in 1.6.4-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
apr-util1.6.1-5 ... 1.6.4-2 (13 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
apr-util1.6.3-1
  • every version up to 1.6.3-1+deb12u1: fixed in 1.6.3-1+deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
apr-util1.6.3-3
  • every version up to 1.6.3-3+deb13u1: fixed in 1.6.3-3+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
apr-util1.6.3-3, 1.6.3-4
  • every version up to 1.6.4-1: fixed in 1.6.4-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 25× in last 7d / 130× 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 264 total refreshes for this CVE.

  1. 2026-10-04 23:25 UTCEG score recompute
  2. 2026-10-04 23:25 UTCVendor advisory
  3. 2026-10-04 23:25 UTCGHSA enrichment
  4. 2026-10-04 23:22 UTCEPSS rescore
  5. 2026-10-04 05:51 UTCEG score recompute
  6. 2026-10-04 05:51 UTCVendor advisory
  7. 2026-10-04 05:51 UTCGHSA enrichment
  8. 2026-10-03 14:25 UTCEPSS rescore
  9. 2026-10-03 01:04 UTCEG score recompute
  10. 2026-10-03 01:04 UTCVendor advisory
  11. 2026-10-03 01:04 UTCGHSA enrichment
  12. 2026-10-02 09:41 UTCEG score recompute
  13. 2026-10-02 09:41 UTCVendor advisory
  14. 2026-10-02 09:41 UTCGHSA enrichment
  15. 2026-10-01 19:49 UTCEPSS rescore
  16. 2026-10-01 14:33 UTCVendor advisory
  17. 2026-10-01 14:32 UTCGHSA enrichment
  18. 2026-10-01 01:45 UTCEG score recompute
  19. 2026-10-01 01:45 UTCVendor advisory
  20. 2026-10-01 01:45 UTCGHSA enrichment
  21. 2026-09-30 15:03 UTCEPSS rescore
  22. 2026-09-29 05:55 UTCEG score recompute
  23. 2026-09-29 05:55 UTCVendor advisory
  24. 2026-09-29 05:55 UTCGHSA enrichment
  25. 2026-09-28 13:51 UTCEPSS rescore
Show 75 more
  1. 2026-09-28 06:19 UTCVendor advisory
  2. 2026-09-28 06:19 UTCGHSA enrichment
  3. 2026-09-27 17:31 UTCEG score recompute
  4. 2026-09-27 17:31 UTCVendor advisory
  5. 2026-09-27 17:31 UTCGHSA enrichment
  6. 2026-09-27 13:48 UTCEPSS rescore
  7. 2026-09-26 15:58 UTCEPSS rescore
  8. 2026-09-26 00:26 UTCEPSS rescore
  9. 2026-09-25 04:23 UTCEG score recompute
  10. 2026-09-25 04:23 UTCVendor advisory
  11. 2026-09-25 04:23 UTCGHSA enrichment
  12. 2026-09-24 05:36 UTCEG score recompute
  13. 2026-09-24 05:36 UTCVendor advisory
  14. 2026-09-24 05:36 UTCGHSA enrichment
  15. 2026-09-23 16:37 UTCVendor advisory
  16. 2026-09-23 16:37 UTCGHSA enrichment
  17. 2026-09-23 03:47 UTCVendor advisory
  18. 2026-09-23 03:47 UTCGHSA enrichment
  19. 2026-09-22 14:59 UTCEG score recompute
  20. 2026-09-22 14:59 UTCVendor advisory
  21. 2026-09-22 14:59 UTCGHSA enrichment
  22. 2026-09-22 01:40 UTCEG score recompute
  23. 2026-09-22 01:40 UTCVendor advisory
  24. 2026-09-22 01:40 UTCGHSA enrichment
  25. 2026-09-21 12:52 UTCEG score recompute
  26. 2026-09-21 12:52 UTCVendor advisory
  27. 2026-09-21 12:52 UTCGHSA enrichment
  28. 2026-09-20 20:15 UTCEPSS rescore
  29. 2026-09-20 10:57 UTCVendor advisory
  30. 2026-09-20 10:57 UTCGHSA enrichment
  31. 2026-09-19 21:28 UTCEG score recompute
  32. 2026-09-19 21:28 UTCVendor advisory
  33. 2026-09-19 21:28 UTCGHSA enrichment
  34. 2026-09-19 07:29 UTCEG score recompute
  35. 2026-09-19 07:29 UTCVendor advisory
  36. 2026-09-19 07:29 UTCGHSA enrichment
  37. 2026-09-18 19:28 UTCEPSS rescore
  38. 2026-09-18 19:28 UTCEPSS rescore
  39. 2026-09-18 17:36 UTCVendor advisory
  40. 2026-09-18 17:36 UTCGHSA enrichment
  41. 2026-09-18 04:05 UTCEG score recompute
  42. 2026-09-18 04:05 UTCVendor advisory
  43. 2026-09-18 04:05 UTCGHSA enrichment
  44. 2026-09-17 19:30 UTCEPSS rescore
  45. 2026-09-17 15:16 UTCVendor advisory
  46. 2026-09-17 15:16 UTCGHSA enrichment
  47. 2026-09-17 00:59 UTCEG score recompute
  48. 2026-09-17 00:59 UTCVendor advisory
  49. 2026-09-17 00:59 UTCGHSA enrichment
  50. 2026-09-16 14:08 UTCEPSS rescore
  51. 2026-09-16 05:15 UTCEPSS rescore
  52. 2026-09-16 03:01 UTCVendor advisory
  53. 2026-09-16 03:01 UTCGHSA enrichment
  54. 2026-09-15 06:46 UTCEG score recompute
  55. 2026-09-15 06:46 UTCVendor advisory
  56. 2026-09-15 06:46 UTCGHSA enrichment
  57. 2026-09-15 03:11 UTCEPSS rescore
  58. 2026-09-14 16:41 UTCVendor advisory
  59. 2026-09-14 16:41 UTCGHSA enrichment
  60. 2026-09-14 03:53 UTCEG score recompute
  61. 2026-09-14 03:53 UTCVendor advisory
  62. 2026-09-14 03:53 UTCGHSA enrichment
  63. 2026-09-13 16:47 UTCEPSS rescore
  64. 2026-09-13 15:05 UTCVendor advisory
  65. 2026-09-13 15:05 UTCGHSA enrichment
  66. 2026-09-13 01:54 UTCEG score recompute
  67. 2026-09-13 01:54 UTCVendor advisory
  68. 2026-09-13 01:54 UTCGHSA enrichment
  69. 2026-09-12 15:01 UTCEPSS rescore
  70. 2026-09-12 13:05 UTCVendor advisory
  71. 2026-09-12 13:05 UTCGHSA enrichment
  72. 2026-09-12 00:17 UTCEG score recompute
  73. 2026-09-12 00:17 UTCVendor advisory
  74. 2026-09-12 00:17 UTCGHSA enrichment
  75. 2026-09-11 14:53 UTCEPSS rescore

Related CVEs(same product + same vendor + 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 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 0.5% probability of exploitation in the next 30 days (41st percentile of EPSS-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?
A fix for CVE-2026-34501 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-34501 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-34501

Explore →

Is Your Infrastructure Affected by CVE-2026-34501?

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

Book a Demo →Browse All CVEs