CVE-2026-72912

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (22nd percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 4.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

CyberChef is a web app for encryption, encoding, compression, and data analysis. Prior to 11.3.0, CyberChef's pretty-recipe parser in src/core/Utils.mjs can exhaust client-side CPU when a malformed #recipe= URL fragment containing a large number of unmatched quote characters reaches Utils.parseRecipeConfig(). The function synchronously applies a complex global regular expression that may perform heavy backtracking before rejecting the input, causing the victim's browser tab to freeze during startup for seconds or longer. No code execution, data exfiltration, or privilege escalation occurs. This issue is fixed in version 11.3.0.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
19
EG Risk 19/100CISA 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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
22nd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (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 10, 2026

Last Modified

September 9, 2026

Advisory Details (4)

Auto-updated Aug 10, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_pr, github_release, github.
githubMentions a patch (unverified)🟡 PoC Available

CyberChef’s pretty-recipe parser vulnerable to client-side ReDoS / CPU exhaustion when parsing a malformed #recipe= URL · Advisory · gchq/CyberChef · GitHub

https://github.com/gchq/CyberChef/security/advisories/GHSA-w74r-jxjh-gwr6
github_release Patch Available

Release v11.3.0 (gchq/CyberChef)

Patch available: gchq/CyberChef v11.3.0

https://github.com/gchq/CyberChef/releases/tag/v11.3.0
github_pr Patch Available

Fix pretty recipe parser ReDoS

Patch available: gchq/CyberChef v11.3.0 (PR #2687 merged 2026-07-24)

https://github.com/gchq/CyberChef/pull/2687
github_commit Patch Available

commit f77ddf489050 (gchq/CyberChef)

Patch available: gchq/CyberChef v11.3.0 (contains commit f77ddf489050)

https://github.com/gchq/CyberChef/commit/f77ddf489050b339faa978bb28da954bafd289ae

Weakness Classification(2)

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

Data Freshness Timeline

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

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Frequently asked(5)

What is CVE-2026-72912?
CVE-2026-72912 is a medium vulnerability published on August 10, 2026. CyberChef is a web app for encryption, encoding, compression, and data analysis. Prior to 11.3.0, CyberChef's pretty-recipe parser in src/core/Utils.mjs can exhaust client-side CPU when a malformed #recipe= URL fragment containing a large number of unmatched quote characters reaches…
When was CVE-2026-72912 disclosed?
CVE-2026-72912 was first published on August 10, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72912 actively exploited?
CVE-2026-72912 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (22nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72912?
CVE-2026-72912 has a CVSS base score of 4.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-72912?
A fix for CVE-2026-72912 is available: update to the fixed version the vendor names in its advisory.

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