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
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
7.5HIGHmedium confidence
EG Risk
38
EG Risk 38/100

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%
EPSS PROB
0.4%
EPSS %ILE
29th
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
genericMentions a patch (unverified)

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

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
fzf0.24.3-1 ... 0.74.1-1 (31 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
fzf0.38.0-1 ... 0.74.4-1 (22 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
fzf0.60.3-1 ... 0.74.4-1 (11 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
fzf0.60.3-1 ... 0.72.0-1 (7 versions)
  • every version up to 0.73.1-1: fixed in 0.73.1-1
—
Go(1)
PackageVulnerable rangeFix by version rangeDependents
github.com/junegunn/fzf—
  • every version up to 0.73.1: fixed in 0.73.1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 31× 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 228 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Same product

1 shown

Debian:11:fzf

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 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 0.4% probability of exploitation in the next 30 days (29th percentile of EPSS-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?
A fix for CVE-2026-53433 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-53433 are linked in the Vendor Advisories panel on this page.

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