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: 0.2%, top 92% of all CVEs by exploit prediction. 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%CVSS: 4.3Exploit: None knownExposed: 0

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

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
4.3(medium)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

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.
github Patch Available🟡 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 / 46× 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. 2026-09-19 02:04 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 01:47 UTCEG score recompute
  4. 2026-09-17 02:04 UTCEG score recompute
  5. 2026-09-16 14:08 UTCEPSS rescore
  6. 2026-09-16 05:15 UTCEPSS rescore
  7. 2026-09-16 02:21 UTCEG score recompute
  8. 2026-09-15 03:12 UTCEPSS rescore
  9. 2026-09-13 20:27 UTCEG score recompute
  10. 2026-09-12 20:41 UTCEG score recompute
  11. 2026-09-12 15:02 UTCEPSS rescore
  12. 2026-09-11 20:55 UTCEG score recompute
  13. 2026-09-11 14:53 UTCEPSS rescore
  14. 2026-09-10 21:12 UTCEG score recompute
  15. 2026-09-10 09:35 UTCEPSS rescore
  16. 2026-09-07 17:11 UTCEG score recompute
  17. 2026-09-06 13:48 UTCEPSS rescore
  18. 2026-09-06 01:33 UTCEG score recompute
  19. 2026-09-05 01:50 UTCEG score recompute
  20. 2026-09-04 05:07 UTCEPSS rescore
  21. 2026-09-03 01:59 UTCEG score recompute
  22. 2026-09-02 14:12 UTCEPSS rescore
  23. 2026-09-01 13:54 UTCEPSS rescore
  24. 2026-09-01 13:31 UTCEG score recompute
  25. 2026-09-01 04:40 UTCEPSS rescore
Show 44 more
  1. 2026-09-01 04:40 UTCEPSS rescore
  2. 2026-08-31 09:56 UTCEG score recompute
  3. 2026-08-30 19:18 UTCEPSS rescore
  4. 2026-08-30 19:17 UTCEPSS rescore
  5. 2026-08-30 09:40 UTCEG score recompute
  6. 2026-08-30 01:22 UTCEPSS rescore
  7. 2026-08-29 09:53 UTCEG score recompute
  8. 2026-08-28 21:42 UTCEPSS rescore
  9. 2026-08-27 19:41 UTCEG score recompute
  10. 2026-08-27 14:25 UTCEPSS rescore
  11. 2026-08-26 19:32 UTCEG score recompute
  12. 2026-08-26 14:47 UTCEPSS rescore
  13. 2026-08-25 19:43 UTCEG score recompute
  14. 2026-08-25 13:49 UTCEPSS rescore
  15. 2026-08-24 19:59 UTCEG score recompute
  16. 2026-08-23 20:16 UTCEG score recompute
  17. 2026-08-23 00:19 UTCEPSS rescore
  18. 2026-08-22 20:34 UTCEG score recompute
  19. 2026-08-21 23:49 UTCEPSS rescore
  20. 2026-08-21 20:51 UTCEG score recompute
  21. 2026-08-20 22:56 UTCEPSS rescore
  22. 2026-08-19 21:25 UTCEG score recompute
  23. 2026-08-19 17:04 UTCEPSS rescore
  24. 2026-08-18 21:39 UTCEG score recompute
  25. 2026-08-18 13:49 UTCEPSS rescore
  26. 2026-08-18 13:49 UTCEPSS rescore
  27. 2026-08-17 21:55 UTCEG score recompute
  28. 2026-08-17 13:47 UTCEPSS rescore
  29. 2026-08-16 22:13 UTCEG score recompute
  30. 2026-08-16 14:56 UTCEPSS rescore
  31. 2026-08-16 14:56 UTCEPSS rescore
  32. 2026-08-16 02:15 UTCEPSS rescore
  33. 2026-08-15 22:30 UTCEG score recompute
  34. 2026-08-15 01:31 UTCEPSS rescore
  35. 2026-08-13 23:04 UTCEG score recompute
  36. 2026-08-13 22:00 UTCEPSS rescore
  37. 2026-08-12 23:22 UTCEG score recompute
  38. 2026-08-12 22:21 UTCEG score recompute
  39. 2026-08-12 20:56 UTCEG score recompute
  40. 2026-08-12 13:51 UTCEPSS rescore
  41. 2026-08-11 21:13 UTCEG score recompute
  42. 2026-08-10 21:31 UTCEG score recompute
  43. 2026-08-10 21:15 UTCEG score recompute
  44. 2026-08-10 21:14 UTCMITRE cvelistV5first tracked

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 in the National Vulnerability Database 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% probability of exploitation in the next 30 days, which ranks it in the top 91.6% of all scored CVEs.
What is the CVSS score of CVE-2026-72912?
CVE-2026-72912 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-72912?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72912, 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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