CVE-2026-3945

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-03-30. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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.

An integer overflow vulnerability in the HTTP chunked transfer encoding parser in tinyproxy up to and including version 1.11.3 allows an unauthenticated remote attacker to cause a denial of service (DoS). The issue occurs because chunk size values are parsed using strtol without properly validating overflow conditions (e.g., errno == ERANGE).

CVSS v3
7.5
EG Score
7.5(medium)
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
46%
KEV
Not listed

Published

March 30, 2026

Last Modified

August 10, 2026

Advisory Details (5)

Auto-updated Aug 2, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit, github_pr.
generic

Releases · tinyproxy/tinyproxy · GitHub

https://github.com/tinyproxy/tinyproxy/releases
github_pr

reqs: prevent potential int overflow when parsing chunked data

Fix merged in tinyproxy/tinyproxy PR #603 on 2026-03-29 — awaiting tagged release

https://github.com/tinyproxy/tinyproxy/pull/603
generic

Integer overflow in chunked transfer parser may lead to DoS · Issue #602 · tinyproxy/tinyproxy · GitHub

https://github.com/tinyproxy/tinyproxy/issues/602
github_commit

commit bb7edc4 (tinyproxy/tinyproxy)

Fix landed in tinyproxy/tinyproxy commit bb7edc4 — awaiting tagged release

https://github.com/tinyproxy/tinyproxy/commit/bb7edc4
github_commit

commit 969852c (tinyproxy/tinyproxy)

Fix landed in tinyproxy/tinyproxy commit 969852c — awaiting tagged release

https://github.com/tinyproxy/tinyproxy/commit/969852c

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
tinyproxy1.10.0-5 ... 1.11.3-1~bpo13+1 (15 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
tinyproxy1.11.1-2.1 ... 1.11.3-1~bpo13+1 (8 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
tinyproxy1.11.2-1, 1.11.3-1, 1.11.3-1~bpo13+1——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
tinyproxy1.11.2-1, 1.11.3-1, 1.11.3-1~bpo13+1——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 29× 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. 2026-09-15 03:11 UTCEPSS rescore
  2. 2026-09-13 16:47 UTCEPSS rescore
  3. 2026-09-12 15:01 UTCEPSS rescore
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-11 09:37 UTCEPSS rescore
  6. 2026-09-10 09:34 UTCEPSS rescore
  7. 2026-09-08 22:00 UTCEPSS rescore
  8. 2026-09-07 16:01 UTCEPSS rescore
  9. 2026-09-06 13:47 UTCEPSS rescore
  10. 2026-09-04 05:06 UTCEPSS rescore
  11. 2026-09-02 14:12 UTCEPSS rescore
  12. 2026-09-02 13:04 UTCOSV refresh
  13. 2026-09-01 13:53 UTCEPSS rescore
  14. 2026-09-01 04:39 UTCEPSS rescore
  15. 2026-08-30 19:17 UTCEPSS rescore
  16. 2026-08-30 01:22 UTCEPSS rescore
  17. 2026-08-28 21:41 UTCEPSS rescore
  18. 2026-08-27 14:25 UTCEPSS rescore
  19. 2026-08-26 14:46 UTCEPSS rescore
  20. 2026-08-25 13:49 UTCEPSS rescore
  21. 2026-08-23 00:19 UTCEPSS rescore
  22. 2026-08-21 23:49 UTCEPSS rescore
  23. 2026-08-20 22:55 UTCEPSS rescore
  24. 2026-08-19 17:03 UTCEPSS rescore
  25. 2026-08-18 13:48 UTCEPSS rescore
Show 56 more
  1. 2026-08-17 13:47 UTCEPSS rescore
  2. 2026-08-16 14:56 UTCEPSS rescore
  3. 2026-08-16 09:49 UTCEG score recompute
  4. 2026-08-16 09:49 UTCGHSA enrichment
  5. 2026-08-16 02:14 UTCEPSS rescore
  6. 2026-08-15 01:30 UTCEPSS rescore
  7. 2026-08-14 19:08 UTCGHSA enrichment
  8. 2026-08-14 06:11 UTCEG score recompute
  9. 2026-08-14 06:11 UTCGHSA enrichment
  10. 2026-08-13 22:00 UTCEPSS rescore
  11. 2026-08-12 20:30 UTCEG score recompute
  12. 2026-08-12 20:30 UTCGHSA enrichment
  13. 2026-08-12 13:51 UTCEPSS rescore
  14. 2026-08-11 20:40 UTCEG score recompute
  15. 2026-08-11 20:40 UTCGHSA enrichment
  16. 2026-08-11 13:43 UTCEPSS rescore
  17. 2026-08-11 03:41 UTCEG score recompute
  18. 2026-08-11 03:41 UTCGHSA enrichment
  19. 2026-08-11 00:00 UTCEPSS rescore
  20. 2026-08-10 12:27 UTCEG score recompute
  21. 2026-08-10 12:27 UTCGHSA enrichment
  22. 2026-08-10 12:04 UTCGHSA enrichment
  23. 2026-08-10 11:43 UTCGHSA enrichment
  24. 2026-08-10 11:23 UTCGHSA enrichment
  25. 2026-08-10 05:17 UTCGHSA enrichment
  26. 2026-08-09 17:32 UTCEG score recompute
  27. 2026-08-09 17:32 UTCGHSA enrichment
  28. 2026-08-09 13:46 UTCEPSS rescore
  29. 2026-08-09 05:45 UTCEG score recompute
  30. 2026-08-09 05:45 UTCGHSA enrichment
  31. 2026-08-08 16:37 UTCEPSS rescore
  32. 2026-08-08 03:41 UTCEG score recompute
  33. 2026-08-08 03:41 UTCGHSA enrichment
  34. 2026-08-07 15:56 UTCGHSA enrichment
  35. 2026-08-06 18:28 UTCEG score recompute
  36. 2026-08-06 18:28 UTCGHSA enrichment
  37. 2026-08-06 13:46 UTCEPSS rescore
  38. 2026-08-06 01:37 UTCEG score recompute
  39. 2026-08-06 01:37 UTCGHSA enrichment
  40. 2026-08-05 19:17 UTCEPSS rescore
  41. 2026-08-05 13:52 UTCEG score recompute
  42. 2026-08-05 13:52 UTCGHSA enrichment
  43. 2026-08-04 15:10 UTCEPSS rescore
  44. 2026-08-04 10:38 UTCEPSS rescore
  45. 2026-08-03 23:01 UTCEG score recompute
  46. 2026-08-03 23:01 UTCGHSA enrichment
  47. 2026-08-03 10:36 UTCEPSS rescore
  48. 2026-08-03 02:59 UTCGHSA enrichment
  49. 2026-08-02 15:04 UTCEG score recompute
  50. 2026-08-02 15:04 UTCGHSA enrichment
  51. 2026-08-02 02:27 UTCEPSS rescore
  52. 2026-08-01 04:16 UTCEPSS rescore
  53. 2026-07-30 16:28 UTCEPSS rescore
  54. 2026-07-30 01:30 UTCEPSS rescore
  55. 2026-07-27 14:17 UTCEG score recompute
  56. 2026-07-27 14:17 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-3945?
CVE-2026-3945 is a high vulnerability published on March 30, 2026. An integer overflow vulnerability in the HTTP chunked transfer encoding parser in tinyproxy up to and including version 1.11.3 allows an unauthenticated remote attacker to cause a denial of service (DoS). The issue occurs because chunk size values are parsed using strtol without properly validating…
When was CVE-2026-3945 disclosed?
CVE-2026-3945 was first published in the National Vulnerability Database on March 30, 2026, with the most recent update on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-3945 actively exploited?
CVE-2026-3945 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 54.2% of all scored CVEs.
What is the CVSS score of CVE-2026-3945?
CVE-2026-3945 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-3945?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-3945, 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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