Vulnerability-Lookup

CVE-2026-48142 (GCVE-0-2026-48142)

Vulnerability from cvelistv5 – Published: 2026-06-17 14:04 – Updated: 2026-06-17 15:42 X_F5

Title

NGINX ngx_http_charset_module vulnerability

Summary

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.

Severity

4.8 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

6.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-125 - Out-of-bounds Read

Assigner

References

1 reference

URL	Tags
https://my.f5.com/manage/s/article/K000161585	vendor-advisory

Impacted products

2 products

Vendor	Product	Version
F5	NGINX Open Source	Affected: 1.13.10 , < 1.31.2 (custom) Affected: 1.30.0 , < 1.30.3 (custom)
F5	NGINX Plus	Affected: 37.0 , < 37.0.2.1 (custom) Affected: R36 , < R36 P6 (custom)

Date Public

2026-06-17 14:00

Credits

"F5 acknowledges p4p3r of CYBERONE and Han Yan of Xiaomi for bringing this issue to our attention and following the highest standards of coordinated disclosure."

Show details on NVD website

JSON

To clipboard

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CERTFR-2026-AVI-0775

Vulnerability from certfr_avis - Published: 2026-06-18 - Updated: 2026-06-18

De multiples vulnérabilités ont été découvertes dans Nginx. Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et une atteinte à la confidentialité des données.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

Vendor	Product	Description
Nginx	Nginx	NGINX Gateway Fabric versions 1.3.0 à 1.6.2 antérieures à 2.6.4
Nginx	Nginx	NGINX Plus versions 37.x antérieures à 37.0.2.1
Nginx	Nginx	NGINX Open Source versions 1.31.x antérieures à 1.31.2
Nginx	Nginx	NGINX Gateway Fabric versions 2.x antérieures à 2.6.4
Nginx	Nginx	NGINX Open Source versions 1.30.x antérieures à 1.30.3
Nginx	Nginx	NGINX Plus versions R33 à R36 antérieures à R36 P6

References

Title

Publication Time

FKIE_CVE-2026-48142

Vulnerability from fkie_nvd - Published: 2026-06-17 15:16 - Updated: 2026-06-17 17:17

Severity

4.8 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

Summary

References

	URL	Tags
	f5sirt@f5.com	https://my.f5.com/manage/s/article/K000161585

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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}

GHSA-2388-JP8V-FG9W

Vulnerability from github – Published: 2026-06-17 18:35 – Updated: 2026-06-17 18:35

Details

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

Severity

4.8 (Medium)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

6.3 (Medium)


                  
                    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

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  "affected": [],
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  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-17T15:16:59Z",
    "severity": "MODERATE"
  },
  "details": "NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module\u00a0module. When content is served or proxied through a location block with both source_charset\u00a0utf-8; and a charset\u00a0directive (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. \n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.",
  "id": "GHSA-2388-jp8v-fg9w",
  "modified": "2026-06-17T18:35:56Z",
  "published": "2026-06-17T18:35:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48142"
    },
    {
      "type": "WEB",
      "url": "https://my.f5.com/manage/s/article/K000161585"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-48142 (GCVE-0-2026-48142)

CERTFR-2026-AVI-0775

Solutions

FKIE_CVE-2026-48142

GHSA-2388-JP8V-FG9W

Tags

Sightings

Nomenclature