CVE-2026-75106

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-17. A secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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: 0.4%CVSS: 9.1Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

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
9.1CRITICALmedium confidence
EG Risk
72
EG Risk 72/100CISA 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
Severity91% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
31st
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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 17, 2026

Last Modified

October 1, 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 40× in last 7d / 188× 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 333 total refreshes for this CVE.

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

Related CVEs(same CWE)

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 on August 17, 2026, with the most recent update on October 1, 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 0.4% probability of exploitation in the next 30 days (31st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75106?
CVE-2026-75106 has a CVSS base score of 9.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-75106?
A fix for CVE-2026-75106 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-75106 are linked in the Vendor Advisories panel on this page.

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