CVE-2026-77391

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory (severity: LOW) published 2026-08-21. A secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 4.3Exploit: Elevated riskExposed services: Not assessed

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

A security flaw has been discovered in SourceCodester Dynamic Input Field Generator Using HTML, CSS, and PHP 1.0. This affects an unknown function. The manipulation results in cross-site request forgery. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
35
EG Risk 35/100CISA 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%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
12th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation public PoC (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 21, 2026

Last Modified

August 24, 2026

Advisory Details (2)

Auto-updated Aug 21, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Free Source Code Projects and Tutorials - sourcecodester.com

https://www.sourcecodester.com/
generic🟡 PoC Available

CSRF vulnerability in Dynamic Input Field Generator (Sourcecodester) · GitHub

https://gist.github.com/rionyxraiza/428d4481fe471704829ca06de7be9d8c

Vendor Advisories for CVE-2026-77391(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 78× 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 130 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-77391?
CVE-2026-77391 is a medium vulnerability published on August 21, 2026. A security flaw has been discovered in SourceCodester Dynamic Input Field Generator Using HTML, CSS, and PHP 1.0. This affects an unknown function. The manipulation results in cross-site request forgery. The attack can be launched remotely. The exploit has been released to the public and may be…
When was CVE-2026-77391 disclosed?
CVE-2026-77391 was first published on August 21, 2026, with the most recent update on August 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-77391 actively exploited?
CVE-2026-77391 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (12th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-77391?
CVE-2026-77391 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-2026-77391?
No fix for CVE-2026-77391 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-77391 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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