OPENSUSE-SU-2026:10913-1

Vulnerability from csaf_opensuse - Published: 2026-05-30 00:00 - Updated: 2026-09-17 17:07
Summary
golang-github-v2fly-v2ray-core-5.51.2-1.1 on GA media
Severity
Moderate
Notes
Title of the patch: golang-github-v2fly-v2ray-core-5.51.2-1.1 on GA media
Description of the patch: These are all security issues fixed in the golang-github-v2fly-v2ray-core-5.51.2-1.1 package on the GA media of openSUSE Tumbleweed.
Patchnames: openSUSE-Tumbleweed-2026-10913
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2026-27017
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
Product Identifier Version Remediation
Unresolved product id: openSUSE Tumbleweed:golang-github-v2fly-v2ray-core-0:5.51.2-1.1.aarch64 —
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:golang-github-v2fly-v2ray-core-0:5.51.2-1.1.ppc64le —
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:golang-github-v2fly-v2ray-core-0:5.51.2-1.1.s390x —
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:golang-github-v2fly-v2ray-core-0:5.51.2-1.1.x86_64 —
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:v2ray-core-0:5.51.2-1.1.aarch64 —
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:v2ray-core-0:5.51.2-1.1.ppc64le —
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:v2ray-core-0:5.51.2-1.1.s390x —
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:v2ray-core-0:5.51.2-1.1.x86_64 —
Vendor Fix
Threats
Impact moderate
CVE-2026-39821
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected products
Recommended 8 products, the same list as for CVE-2026-27017
Threats
Impact important
References
To clipboard 

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          "text": "uTLS is a fork of crypto/tls, created to customize ClientHello for fingerprinting resistance while still using it for the handshake. Versions 1.6.0 through 1.8.0 contain a fingerprint mismatch with Chrome when using GREASE ECH, related to cipher suite selection. When Chrome selects the preferred cipher suite in the outer ClientHello and for ECH, it does so consistently based on hardware support-for example, if it prefers AES for the outer cipher suite, it also uses AES for ECH. However, the Chrome parrot in uTLS hardcodes AES preference for outer cipher suites but selects the ECH cipher suite randomly between AES and ChaCha20. This creates a 50% chance of selecting ChaCha20 for ECH while using AES for the outer cipher suite, a combination impossible in Chrome. This issue only affects GREASE ECH; in real ECH, Chrome selects the first valid cipher suite when AES is preferred, which uTLS handles correctly. This issue has been fixed in version 1.8.1.",
          "title": "CVE description"
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          "category": "general",
          "text": "The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode(\"xn--example-.com\") incorrectly returns the name \"example.com\" rather than an error. This behavior can lead to privilege escalation in programs using the idna package. For example, a program which performs privilege checks on the ASCII hostname may reject \"example.com\" but permit \"xn--example-.com\". If that program subsequently converts the ASCII hostname to Unicode, it will inadvertently permits access to the Unicode name \"example.com\".",
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            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "openSUSE Tumbleweed:golang-github-v2fly-v2ray-core-0:5.51.2-1.1.aarch64",
            "openSUSE Tumbleweed:golang-github-v2fly-v2ray-core-0:5.51.2-1.1.ppc64le",
            "openSUSE Tumbleweed:golang-github-v2fly-v2ray-core-0:5.51.2-1.1.s390x",
            "openSUSE Tumbleweed:golang-github-v2fly-v2ray-core-0:5.51.2-1.1.x86_64",
            "openSUSE Tumbleweed:v2ray-core-0:5.51.2-1.1.aarch64",
            "openSUSE Tumbleweed:v2ray-core-0:5.51.2-1.1.ppc64le",
            "openSUSE Tumbleweed:v2ray-core-0:5.51.2-1.1.s390x",
            "openSUSE Tumbleweed:v2ray-core-0:5.51.2-1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-05-30T00:00:00Z",
          "details": "important"
        }
      ],
      "title": "CVE-2026-39821"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.