CVE-2026-16531

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-07-30. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

An unauthenticated remote attacker can exploit a path traversal vulnerability in the PCP pmproxy logger servlet using a crafted hostname. This allows arbitrary file and directory creation, potentially leading to a denial of service.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
29%
KEV
Not listed

Published

July 30, 2026

Last Modified

August 21, 2026

Advisory Details (2)

Auto-updated Jul 30, 2026
Patch available. Sources: redhat.
redhat

2506037 – (CVE-2026-16531) CVE-2026-16531 PCP: PCP: Arbitrary file creation via path traversal in pmproxy logger servlet

https://bugzilla.redhat.com/show_bug.cgi?id=2506037
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-16531

Vendor Advisories for CVE-2026-16531(1)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
pcp5.2.6-1 ... 7.2.0-1 (44 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
pcp6.0.3-1.1 ... 7.2.0-1 (30 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
pcp6.3.8-1 ... 7.2.0-1 (14 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
pcp6.3.8-1 ... 7.2.0-1 (14 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 88× 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. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 22:42 UTCEG score recompute
  3. 2026-08-29 22:42 UTCGHSA enrichment
  4. 2026-08-28 21:41 UTCEPSS rescore
  5. 2026-08-27 14:25 UTCEPSS rescore
  6. 2026-08-27 10:49 UTCEG score recompute
  7. 2026-08-27 10:49 UTCGHSA enrichment
  8. 2026-08-26 14:46 UTCEPSS rescore
  9. 2026-08-26 11:15 UTCEG score recompute
  10. 2026-08-26 11:15 UTCGHSA enrichment
  11. 2026-08-25 13:48 UTCEPSS rescore
  12. 2026-08-25 11:35 UTCEG score recompute
  13. 2026-08-25 11:35 UTCGHSA enrichment
  14. 2026-08-24 12:03 UTCEG score recompute
  15. 2026-08-24 12:03 UTCGHSA enrichment
  16. 2026-08-23 12:28 UTCEG score recompute
  17. 2026-08-23 12:28 UTCGHSA enrichment
  18. 2026-08-23 00:19 UTCEPSS rescore
  19. 2026-08-22 12:56 UTCEG score recompute
  20. 2026-08-22 12:56 UTCGHSA enrichment
  21. 2026-08-21 23:49 UTCEPSS rescore
  22. 2026-08-21 13:21 UTCEG score recompute
  23. 2026-08-21 13:21 UTCGHSA enrichment
  24. 2026-08-21 12:30 UTCEG score recompute
  25. 2026-08-21 12:30 UTCGHSA enrichment
Show 73 more
  1. 2026-08-21 07:21 UTCEG score recompute
  2. 2026-08-21 07:21 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 07:48 UTCEG score recompute
  5. 2026-08-20 07:48 UTCGHSA enrichment
  6. 2026-08-19 17:03 UTCEPSS rescore
  7. 2026-08-19 08:16 UTCEG score recompute
  8. 2026-08-19 08:16 UTCGHSA enrichment
  9. 2026-08-18 13:48 UTCEPSS rescore
  10. 2026-08-18 08:43 UTCEG score recompute
  11. 2026-08-18 08:43 UTCGHSA enrichment
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-17 08:40 UTCEG score recompute
  14. 2026-08-17 08:40 UTCGHSA enrichment
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 09:08 UTCEG score recompute
  17. 2026-08-16 09:08 UTCGHSA enrichment
  18. 2026-08-16 02:14 UTCEPSS rescore
  19. 2026-08-15 09:36 UTCEG score recompute
  20. 2026-08-15 09:36 UTCGHSA enrichment
  21. 2026-08-15 01:30 UTCEPSS rescore
  22. 2026-08-14 10:04 UTCEG score recompute
  23. 2026-08-14 10:04 UTCGHSA enrichment
  24. 2026-08-13 22:00 UTCEPSS rescore
  25. 2026-08-13 10:31 UTCEG score recompute
  26. 2026-08-13 10:31 UTCGHSA enrichment
  27. 2026-08-12 13:50 UTCEPSS rescore
  28. 2026-08-12 10:59 UTCEG score recompute
  29. 2026-08-12 10:59 UTCGHSA enrichment
  30. 2026-08-11 13:42 UTCEPSS rescore
  31. 2026-08-11 11:26 UTCEG score recompute
  32. 2026-08-11 11:26 UTCGHSA enrichment
  33. 2026-08-11 00:00 UTCEPSS rescore
  34. 2026-08-10 11:54 UTCEG score recompute
  35. 2026-08-10 11:54 UTCGHSA enrichment
  36. 2026-08-09 13:46 UTCEPSS rescore
  37. 2026-08-09 12:22 UTCEG score recompute
  38. 2026-08-09 12:22 UTCGHSA enrichment
  39. 2026-08-08 16:37 UTCEPSS rescore
  40. 2026-08-08 12:50 UTCEG score recompute
  41. 2026-08-08 12:50 UTCGHSA enrichment
  42. 2026-08-07 13:17 UTCEG score recompute
  43. 2026-08-07 13:17 UTCGHSA enrichment
  44. 2026-08-06 13:46 UTCEPSS rescore
  45. 2026-08-06 13:45 UTCEG score recompute
  46. 2026-08-06 13:45 UTCGHSA enrichment
  47. 2026-08-05 19:17 UTCEPSS rescore
  48. 2026-08-05 14:13 UTCEG score recompute
  49. 2026-08-05 14:13 UTCGHSA enrichment
  50. 2026-08-04 15:10 UTCEPSS rescore
  51. 2026-08-04 14:13 UTCEG score recompute
  52. 2026-08-04 14:13 UTCGHSA enrichment
  53. 2026-08-04 10:38 UTCEPSS rescore
  54. 2026-08-03 14:37 UTCEG score recompute
  55. 2026-08-03 14:37 UTCGHSA enrichment
  56. 2026-08-03 10:35 UTCEPSS rescore
  57. 2026-08-02 15:05 UTCEG score recompute
  58. 2026-08-02 15:05 UTCGHSA enrichment
  59. 2026-08-02 02:26 UTCEPSS rescore
  60. 2026-08-01 15:33 UTCEG score recompute
  61. 2026-08-01 15:33 UTCGHSA enrichment
  62. 2026-08-01 04:15 UTCEPSS rescore
  63. 2026-07-31 16:01 UTCGHSA enrichment
  64. 2026-07-30 16:29 UTCEG score recompute
  65. 2026-07-30 16:29 UTCGHSA enrichment
  66. 2026-07-30 15:40 UTCEG score recompute
  67. 2026-07-30 15:40 UTCGHSA enrichment
  68. 2026-07-30 14:33 UTCEG score recompute
  69. 2026-07-30 14:33 UTCGHSA enrichment
  70. 2026-07-30 06:39 UTCEG score recompute
  71. 2026-07-30 06:39 UTCGHSA enrichment
  72. 2026-07-30 06:19 UTCEG score recompute
  73. 2026-07-30 06:18 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-16531?
CVE-2026-16531 is a medium vulnerability published on July 30, 2026. An unauthenticated remote attacker can exploit a path traversal vulnerability in the PCP pmproxy logger servlet using a crafted hostname. This allows arbitrary file and directory creation, potentially leading to a denial of service.
When was CVE-2026-16531 disclosed?
CVE-2026-16531 was first published in the National Vulnerability Database on July 30, 2026, with the most recent update on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16531 actively exploited?
CVE-2026-16531 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 71.5% of all scored CVEs.
What is the CVSS score of CVE-2026-16531?
CVE-2026-16531 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-16531?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16531, 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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