WID-SEC-W-2026-2850

csafDEcert_bund

DeutschShown in its original language — a full translation is planned for a future version.

Golang Go: Mehrere Schwachstellen

view advisory published 2026-08-13

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Golang Go ausnutzen, um einen Denial of Service zu verursachen, ein Cross Site Scripting durchzuführen, Sicherheitsmaßnahmen zu umgehen oder Daten zu manipulieren.

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describes (10)

Related CVEs.

IDseverity exploitable
CVE-2026-56865US——
A malicious GOPROXY was previously capable of forging up to two sumdb tiles that allow for a requested module to bypass the GOSUMDB check and persist attacker-controlled module con…
CVE-2026-56864US——
A malicious GOSUMDB was capable of serving arbitrary module content not contained within the transparency log. This attack allows for a coordinating GOPROXY and GOSUMDB to serve a…
CVE-2026-56862US——
Handshake messages, such as KeyUpdate, are always considered as state-advancing, regardless of whether a handshake has been completed or not. As a result, a malicious client can ke…
CVE-2026-56860US——
Previously, resolving relative paths containing parent directory ('..') segments performed string conversions and buffer rewrites on each step, resulting in quadratic time complexi…
CVE-2026-56859US——
Previously, DecodeElement would reset the depth counter causing it to never fire; this could lead to stack exhaustion.
CVE-2026-56858US——
Previously, pathological inputs could close an unescaped '/' early, allowing for attack-controlled data to inject arbitrary content, potentially leading to XSS.
CVE-2026-56853US——
When a server is configured to support unencrypted HTTP/2, it reads a few bytes from each new connection to see if they contain the HTTP/2 client preface. ReadHeaderTimeout is unex…
CVE-2026-33818US——
Enforce a recursion limit in Unmarshal to prevent stack exhaustion when parsing deeply-nested, recursive structures.
CVE-2026-46600US——
Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.
CVE-2026-39821US——
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 th…
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references

External citations — patches, advisories, analysis.

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