CVE-2026-53433

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory published 2026-06-30. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
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: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

fzf is vulnerable to a Denial of Service (DoS) due to inefficient HTTP body processing in the --listen mode due to inefficient HTTP body processing using repeated string concatenation, resulting in quadratic time complexity (O(n²)). A crafted POST request with many small segments can trigger excessive CPU usage during request handling.This allows a single malicious request to monopolize the single‑threaded HTTP server, blocking all other clients and resulting in denial of service.

This issue was fixed in version 0.73.1.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

June 30, 2026

Last Modified

July 2, 2026

Advisory Details (3)

Auto-updated Jun 30, 2026
Patch available. Sources: github_commit.
github_commit

commit 7963a2c6586c (junegunn/fzf)

Fix landed in junegunn/fzf commit 7963a2c6586c — awaiting tagged release

https://github.com/junegunn/fzf/commit/7963a2c6586c0b9eaa89b8995de8f0e08cf8a4ce
generic

GitHub - junegunn/fzf: :cherry_blossom: A command-line fuzzy finder · GitHub

https://github.com/junegunn/fzf
generic Patch Available

Vulnerabilities in fzf software | CERT Polska

https://cert.pl/en/posts/2026/06/CVE-2026-53432

Vendor Advisories for CVE-2026-53433(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
fzf0.24.3-1 ... 0.74.1-1 (31 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
fzf0.38.0-1 ... 0.74.1-1 (20 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
fzf0.60.3-1 ... 0.74.1-1 (9 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
fzf0.60.3-1 ... 0.72.0-1 (7 versions)0.73.1-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 104× 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 178 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-53433?
CVE-2026-53433 is a high vulnerability published on June 30, 2026. fzf is vulnerable to a Denial of Service (DoS) due to inefficient HTTP body processing in the --listen mode due to inefficient HTTP body processing using repeated string concatenation, resulting in quadratic time complexity (O(n²)). A crafted POST request with many small segments can trigger…
When was CVE-2026-53433 disclosed?
CVE-2026-53433 was first published in the National Vulnerability Database on June 30, 2026, with the most recent update on July 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53433 actively exploited?
CVE-2026-53433 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 69.4% of all scored CVEs.
What is the CVSS score of CVE-2026-53433?
CVE-2026-53433 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-53433?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53433, 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.

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