CVE-2026-75106

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-17. the CNA's CVSS baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this weekElevated
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.1Exploit: Elevated riskExposed: 0

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

OpnForm derives editable-submission secrets from sequential row identifiers using Hashids with an empty default salt, allowing unauthenticated attackers to compute hashes for any submission. Attackers can read other respondents' full submission data through the submission-fetch endpoint or overwrite submissions by supplying predicted hashes to the answer endpoint.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
72(Attend)
EG Risk 72/100SSVC: Attend

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
Severity91% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

August 17, 2026

Last Modified

August 21, 2026

Advisory Details (5)

Auto-updated Sep 15, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release.
generic

OpnForm Editable Submission Secret Derivation via Empty Hashids Salt | Advisories | VulnCheck

https://www.vulncheck.com/advisories/opnform-editable-submission-secret-derivation-via-empty-hashids-salt
github_release Patch Available

v2.0.2

Patch available: OpnForm/OpnForm v2.0.2

https://github.com/OpnForm/OpnForm/releases/tag/v2.0.2
github_commit Patch Available

commit 6c67ff0a9bc0 (OpnForm/OpnForm)

Patch available: OpnForm/OpnForm v2.0.2 (contains commit 6c67ff0a9bc0)

https://github.com/OpnForm/OpnForm/commit/6c67ff0a9bc0ac27ae26b32b8e108a176f8161b1
generic

GitHub - OpnForm/OpnForm: Beautiful Open-Source Form Builder · GitHub

https://github.com/OpnForm/OpnForm
generic🟡 PoC Available

[BUG] unauthenticated read/write of form submissions via predictable Hashids (editable-submissions feature) · Issue #1259 · OpnForm/OpnForm · GitHub

https://github.com/OpnForm/OpnForm/issues/1259

Vendor Advisories for CVE-2026-75106(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 49× in last 7d / 211× 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 237 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-75106?
CVE-2026-75106 is a critical vulnerability published on August 17, 2026. OpnForm derives editable-submission secrets from sequential row identifiers using Hashids with an empty default salt, allowing unauthenticated attackers to compute hashes for any submission. Attackers can read other respondents' full submission data through the submission-fetch endpoint or…
When was CVE-2026-75106 disclosed?
CVE-2026-75106 was first published in the National Vulnerability Database on August 17, 2026, with the most recent update on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75106 actively exploited?
CVE-2026-75106 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 76.6% of all scored CVEs.
What is the CVSS score of CVE-2026-75106?
CVE-2026-75106 has a CVSS v4.0 base score of 9.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-75106?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-75106, 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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