CVE-2022-30780

HIGHNVD 7.58.2▲
EchelonGraph scoreHIGH confidence

Score elevated to 8.2 because EPSS predicts 56% probability of exploitation within the next 30 days (top 1.0% of all CVEs). NVD baseline CVSS 7.5 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, ghsa, nvd
Elevated
8.2EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 57%
CISA-KEV: Not listedEPSS PROB: 57%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

Lighttpd 1.4.56 through 1.4.58 allows a remote attacker to cause a denial of service (CPU consumption from stuck connections) because connection_read_header_more in connections.c has a typo that disrupts use of multiple read operations on large headers.

CVSS v3
7.5
EG Score
8.2(high)
EG Risk
64(Track)
EG Risk 64/100SSVC: 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
Severity82% × 45%
Exploitation56% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
57%
EPSS %ILE
99%
KEV
Not listed

Published

June 11, 2022

Last Modified

November 21, 2024

References (8)

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
lighttpd—1.4.59-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
lighttpd—1.4.59-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
lighttpd—1.4.59-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
lighttpd—1.4.59-1—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 24× 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 110 total refreshes for this CVE.

  1. 2026-09-06 13:45 UTCEPSS rescore
  2. 2026-09-05 15:25 UTCEPSS rescore
  3. 2026-09-05 12:00 UTCOSV refresh
  4. 2026-09-04 13:57 UTCEPSS rescore
  5. 2026-09-04 13:57 UTCEPSS rescore
  6. 2026-09-04 05:04 UTCEPSS rescore
  7. 2026-09-01 13:51 UTCEPSS rescore
  8. 2026-08-30 19:14 UTCEPSS rescore
  9. 2026-08-28 21:38 UTCEPSS rescore
  10. 2026-08-27 14:22 UTCEPSS rescore
  11. 2026-08-26 14:43 UTCEPSS rescore
  12. 2026-08-25 13:46 UTCEPSS rescore
  13. 2026-08-24 14:13 UTCEPSS rescore
  14. 2026-08-21 23:46 UTCEPSS rescore
  15. 2026-08-20 22:52 UTCEPSS rescore
  16. 2026-08-19 17:01 UTCEPSS rescore
  17. 2026-08-18 22:41 UTCOSV refresh
  18. 2026-08-18 13:45 UTCEPSS rescore
  19. 2026-08-17 13:44 UTCEPSS rescore
  20. 2026-08-16 02:11 UTCEPSS rescore
  21. 2026-08-15 01:27 UTCEPSS rescore
  22. 2026-08-13 21:57 UTCEPSS rescore
  23. 2026-08-12 13:48 UTCEPSS rescore
  24. 2026-08-11 13:38 UTCEPSS rescore
  25. 2026-08-07 16:24 UTCEPSS rescore
Show 75 more
  1. 2026-08-06 13:44 UTCEPSS rescore
  2. 2026-08-03 18:27 UTCOSV refresh
  3. 2026-08-01 04:13 UTCEPSS rescore
  4. 2026-07-30 16:25 UTCEPSS rescore
  5. 2026-07-30 01:28 UTCEPSS rescore
  6. 2026-07-28 15:33 UTCEPSS rescore
  7. 2026-07-26 14:52 UTCEPSS rescore
  8. 2026-07-25 14:15 UTCEPSS rescore
  9. 2026-07-24 14:15 UTCEPSS rescore
  10. 2026-07-24 14:15 UTCEPSS rescore
  11. 2026-07-23 02:11 UTCEG score recompute▲ 0.70
  12. 2026-07-22 22:58 UTCEG score recompute
  13. 2026-07-22 14:06 UTCEPSS rescore
  14. 2026-07-22 14:06 UTCEPSS rescore
  15. 2026-07-20 17:05 UTCEPSS rescore
  16. 2026-07-19 02:27 UTCEPSS rescore
  17. 2026-07-19 02:27 UTCEPSS rescore
  18. 2026-07-17 08:16 UTCOSV refresh
  19. 2026-07-16 17:00 UTCEPSS rescore
  20. 2026-07-15 16:56 UTCEPSS rescore
  21. 2026-07-15 16:56 UTCEPSS rescore
  22. 2026-07-13 22:27 UTCEPSS rescore
  23. 2026-07-13 06:11 UTCEPSS rescore
  24. 2026-07-13 06:11 UTCEPSS rescore
  25. 2026-07-12 05:44 UTCEPSS rescore
  26. 2026-07-12 05:44 UTCEPSS rescore
  27. 2026-07-09 19:07 UTCEPSS rescore
  28. 2026-07-07 13:44 UTCEPSS rescore
  29. 2026-07-06 16:25 UTCEPSS rescore
  30. 2026-07-06 16:25 UTCEPSS rescore
  31. 2026-07-05 02:28 UTCEPSS rescore
  32. 2026-07-05 02:28 UTCEPSS rescore
  33. 2026-07-01 15:04 UTCEPSS rescore
  34. 2026-06-30 23:20 UTCEPSS rescore
  35. 2026-06-30 23:20 UTCEPSS rescore
  36. 2026-06-29 06:32 UTCOSV refresh
  37. 2026-06-28 04:54 UTCEPSS rescore
  38. 2026-06-27 03:07 UTCEPSS rescore
  39. 2026-06-25 13:48 UTCEPSS rescore
  40. 2026-06-25 13:48 UTCEPSS rescore
  41. 2026-06-23 21:31 UTCEPSS rescore
  42. 2026-06-23 21:31 UTCEPSS rescore
  43. 2026-06-21 01:58 UTCEPSS rescore
  44. 2026-06-21 01:58 UTCEPSS rescore
  45. 2026-06-19 19:24 UTCEPSS rescore
  46. 2026-06-19 19:24 UTCEPSS rescore
  47. 2026-06-18 17:51 UTCEPSS rescore
  48. 2026-06-18 17:51 UTCEPSS rescore
  49. 2026-06-17 17:51 UTCEPSS rescore
  50. 2026-06-17 17:51 UTCEPSS rescore
  51. 2026-06-16 17:51 UTCEPSS rescore
  52. 2026-06-16 17:51 UTCEPSS rescore
  53. 2026-06-15 17:46 UTCEPSS rescore
  54. 2026-06-14 23:15 UTCEPSS rescore
  55. 2026-06-12 23:10 UTCEPSS rescore
  56. 2026-06-12 23:10 UTCEPSS rescore
  57. 2026-06-11 23:57 UTCOSV refresh
  58. 2026-06-11 13:58 UTCEPSS rescore
  59. 2026-06-11 13:58 UTCEPSS rescore
  60. 2026-06-10 22:16 UTCEPSS rescore
  61. 2026-06-10 13:20 UTCEPSS rescore
  62. 2026-06-08 14:15 UTCEPSS rescore
  63. 2026-06-08 14:15 UTCEPSS rescore
  64. 2026-06-07 15:23 UTCEPSS rescore
  65. 2026-06-07 15:23 UTCEPSS rescore
  66. 2026-06-07 15:23 UTCEPSS rescore
  67. 2026-06-06 13:46 UTCEPSS rescore
  68. 2026-06-06 13:46 UTCEPSS rescore
  69. 2026-06-05 22:45 UTCEPSS rescore
  70. 2026-06-05 22:45 UTCEPSS rescore
  71. 2026-06-05 06:09 UTCEPSS rescore
  72. 2026-06-05 06:09 UTCEPSS rescore
  73. 2026-05-31 00:15 UTCEPSS rescore
  74. 2026-05-31 00:15 UTCEPSS rescore
  75. 2026-05-28 13:43 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCp0dalirius/CVE-2022-30780-lighttpd-denial-of-service
    First seen May 18, 2022

    CVE-2022-30780 - lighttpd remote denial of service

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2022-30780?
CVE-2022-30780 is a high vulnerability published on June 11, 2022. Lighttpd 1.4.56 through 1.4.58 allows a remote attacker to cause a denial of service (CPU consumption from stuck connections) because connectionreadheader_more in connections.c has a typo that disrupts use of multiple read operations on large headers.
When was CVE-2022-30780 disclosed?
CVE-2022-30780 was first published in the National Vulnerability Database on June 11, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-30780 actively exploited?
CVE-2022-30780 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 57% probability of exploitation in the next 30 days, which ranks it in the top 1.0% of all scored CVEs.
What is the CVSS score of CVE-2022-30780?
CVE-2022-30780 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.2.
How do I remediate CVE-2022-30780?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-30780, 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.

Dependency Blast Radius

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