CVE-2026-48142

MEDIUMPre-NVD 4.84.8—
EchelonGraph scoreMEDIUM confidence

Score 4.8 from GitHub Security Advisory published 2026-06-17. a secondary CVSS source baseline 4.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
4.8
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.8Exploit: NoneExposed: 0

A fix is available — apply it.

NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module module. When content is served or proxied through a location block with both source_charset utf-8; and a charset directive (for example, charset koi8-r;) configured, remote, unauthenticated attackers can send requests (in conjunction with conditions beyond their control) to cause a heap buffer over-read in the NGINX worker process, leading to limited disclosure of memory or a restart.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS v3
4.8
EG Score
4.8(medium)
EG Risk
26(Track)
EG Risk 26/100SSVC: 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
Severity48% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
32.4%
KEV
Not listed

Published

June 17, 2026

Last Modified

June 22, 2026

Advisory Details (1)

Auto-updated Jun 18, 2026
No patch confirmed yet.
generic

myF5

https://my.f5.com/manage/s/article/K000161585

Vendor Advisories for CVE-2026-48142(3)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntunginx-light (1.18.0-6ubuntu14.16) @ jammy2026-07-16ubuntu
redhatnginx-main-1.30.3-2.hum12026-06-19redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 81× 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. 2026-07-23 03:18 UTCEG score recompute
  2. 2026-07-22 14:08 UTCEPSS rescore
  3. 2026-07-21 15:24 UTCEPSS rescore
  4. 2026-07-20 17:08 UTCEPSS rescore
  5. 2026-07-19 14:31 UTCEPSS rescore
  6. 2026-07-19 02:29 UTCEPSS rescore
  7. 2026-07-18 10:04 UTCEPSS rescore
  8. 2026-07-16 17:03 UTCEPSS rescore
  9. 2026-07-16 11:24 UTCVendor advisory
  10. 2026-07-16 11:24 UTCGHSA enrichment
  11. 2026-07-15 16:57 UTCEPSS rescore
  12. 2026-07-15 13:14 UTCVendor advisory
  13. 2026-07-15 13:14 UTCGHSA enrichment
  14. 2026-07-15 02:00 UTCEPSS rescore
  15. 2026-07-14 12:24 UTCVendor advisory
  16. 2026-07-14 12:24 UTCGHSA enrichment
  17. 2026-07-13 22:30 UTCEPSS rescore
  18. 2026-07-13 14:15 UTCVendor advisory
  19. 2026-07-13 14:15 UTCGHSA enrichment
  20. 2026-07-13 06:13 UTCEPSS rescore
  21. 2026-07-12 16:04 UTCVendor advisory
  22. 2026-07-12 16:04 UTCGHSA enrichment
  23. 2026-07-12 05:46 UTCEPSS rescore
  24. 2026-07-11 17:53 UTCVendor advisory
  25. 2026-07-11 17:53 UTCGHSA enrichment
Show 74 more
  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-10 19:43 UTCVendor advisory
  3. 2026-07-10 19:43 UTCGHSA enrichment
  4. 2026-07-09 21:34 UTCVendor advisory
  5. 2026-07-09 21:34 UTCGHSA enrichment
  6. 2026-07-09 19:10 UTCEPSS rescore
  7. 2026-07-08 23:26 UTCVendor advisory
  8. 2026-07-08 23:26 UTCGHSA enrichment
  9. 2026-07-08 15:16 UTCEPSS rescore
  10. 2026-07-08 00:58 UTCVendor advisory
  11. 2026-07-08 00:58 UTCGHSA enrichment
  12. 2026-07-07 13:46 UTCEPSS rescore
  13. 2026-07-07 02:48 UTCVendor advisory
  14. 2026-07-07 02:48 UTCGHSA enrichment
  15. 2026-07-06 16:27 UTCEPSS rescore
  16. 2026-07-06 04:39 UTCVendor advisory
  17. 2026-07-06 04:39 UTCGHSA enrichment
  18. 2026-07-06 02:23 UTCEPSS rescore
  19. 2026-07-05 06:18 UTCVendor advisory
  20. 2026-07-05 06:18 UTCGHSA enrichment
  21. 2026-07-05 02:30 UTCEPSS rescore
  22. 2026-07-04 07:55 UTCVendor advisory
  23. 2026-07-04 07:55 UTCGHSA enrichment
  24. 2026-07-04 06:31 UTCEPSS rescore
  25. 2026-07-03 09:19 UTCVendor advisory
  26. 2026-07-03 09:19 UTCGHSA enrichment
  27. 2026-07-02 11:09 UTCVendor advisory
  28. 2026-07-02 11:09 UTCGHSA enrichment
  29. 2026-07-01 15:07 UTCEPSS rescore
  30. 2026-07-01 12:35 UTCVendor advisory
  31. 2026-07-01 12:35 UTCGHSA enrichment
  32. 2026-06-30 23:22 UTCEPSS rescore
  33. 2026-06-30 14:26 UTCVendor advisory
  34. 2026-06-30 14:26 UTCGHSA enrichment
  35. 2026-06-29 16:17 UTCVendor advisory
  36. 2026-06-29 16:17 UTCGHSA enrichment
  37. 2026-06-29 14:06 UTCEPSS rescore
  38. 2026-06-29 14:06 UTCEPSS rescore
  39. 2026-06-28 18:08 UTCVendor advisory
  40. 2026-06-28 18:08 UTCGHSA enrichment
  41. 2026-06-28 14:07 UTCEPSS rescore
  42. 2026-06-28 04:56 UTCEPSS rescore
  43. 2026-06-28 04:56 UTCEPSS rescore
  44. 2026-06-27 19:57 UTCVendor advisory
  45. 2026-06-27 19:57 UTCGHSA enrichment
  46. 2026-06-27 03:08 UTCEPSS rescore
  47. 2026-06-26 21:48 UTCVendor advisory
  48. 2026-06-26 21:48 UTCGHSA enrichment
  49. 2026-06-25 23:32 UTCVendor advisory
  50. 2026-06-25 23:32 UTCGHSA enrichment
  51. 2026-06-25 13:49 UTCEPSS rescore
  52. 2026-06-25 01:23 UTCGHSA enrichment
  53. 2026-06-24 14:05 UTCEPSS rescore
  54. 2026-06-24 03:14 UTCGHSA enrichment
  55. 2026-06-23 21:33 UTCEPSS rescore
  56. 2026-06-23 21:33 UTCEPSS rescore
  57. 2026-06-23 05:02 UTCGHSA enrichment
  58. 2026-06-22 14:25 UTCEPSS rescore
  59. 2026-06-22 14:25 UTCEPSS rescore
  60. 2026-06-22 06:47 UTCGHSA enrichment
  61. 2026-06-21 14:56 UTCEPSS rescore
  62. 2026-06-21 14:56 UTCEPSS rescore
  63. 2026-06-21 08:35 UTCGHSA enrichment
  64. 2026-06-21 01:59 UTCEPSS rescore
  65. 2026-06-21 01:59 UTCEPSS rescore
  66. 2026-06-20 10:24 UTCGHSA enrichment
  67. 2026-06-19 19:26 UTCEPSS rescore
  68. 2026-06-19 19:26 UTCEPSS rescore
  69. 2026-06-19 12:12 UTCGHSA enrichment
  70. 2026-06-18 17:52 UTCEPSS rescore
  71. 2026-06-18 17:52 UTCEPSS rescore
  72. 2026-06-18 14:03 UTCGHSA enrichment
  73. 2026-06-17 15:53 UTCEG score recompute
  74. 2026-06-17 15:52 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-48142?
CVE-2026-48142 is a medium vulnerability published on June 17, 2026. NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpcharsetmodule module. When content is served or proxied through a location block with both sourcecharset utf-8; and a charset directive (for example, charset koi8-r;) configured, remote, unauthenticated attackers can send requests…
When was CVE-2026-48142 disclosed?
CVE-2026-48142 was first published in the National Vulnerability Database on June 17, 2026, with the most recent update on June 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48142 actively exploited?
CVE-2026-48142 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 32.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-48142?
CVE-2026-48142 has a CVSS v3 base score of 4.8 (NVD).
How do I remediate CVE-2026-48142?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48142, 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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