Golang: Security Vulnerabilities
ReverseProxy can forward queries containing parameters not visible to Rewrite functions. When used with a Rewrite function, or a Director function which parses query parameters, ReverseProxy sanitizes the forwarded request to remove query parameters which are not parsed by url.ParseQuery. ReverseProxy does not take ParseQuery's limit on the total number of query parameters (controlled by GODEBUG=urlmaxqueryparams=N) into account. This can permit ReverseProxy to forward a request containing a query parameter that is not visible to the Rewrite function. For example, the query "a1=x&a2=x&...&a10000=x&hidden=y" can forward the parameter "hidden=y" while hiding it from the proxy's Rewrite function.
CVSS Score
5.3
EPSS Score
0.004
Published
2026-05-07
If a trusted template author were to write a <script> tag containing an empty 'type' attribute or a 'type' attribute with an ASCII whitespace, the execution of the template would incorrectly escape any data passed into the <script> block.
CVSS Score
6.1
EPSS Score
0.004
Published
2026-05-07
The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).
CVSS Score
7.5
EPSS Score
0.006
Published
2026-05-07
When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.
CVSS Score
7.5
EPSS Score
0.008
Published
2026-05-07
When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.
CVSS Score
7.5
EPSS Score
0.008
Published
2026-05-07
The "go tool pack" subcommand (usually used only by the compiler as an internal tool with known-good inputs) does not sanitize output filenames. Extracting a malicious archive file with the "pack" subcommand can write files to arbitrary locations on the filesystem.
CVSS Score
5.9
EPSS Score
0.002
Published
2026-05-07
gopls by default communicates via pipe. However, -port and -listen flags are supported as means of debugging.
If -listen is given a value without an explicit host (e.g. :8080), or -port is used, gopls will listen on 0.0.0.0.
As a result, users might inadvertently cause gopls to bind 0.0.0.0.
This can allow a malicious party on the same network to execute code arbitrarily via gopls.
CVSS Score
8.8
EPSS Score
0.002
Published
2026-05-06
Parsing a malicious font file can cause excessive memory allocation.
CVSS Score
6.1
EPSS Score
0.001
Published
2026-04-21
Parsing a WEBP image with an invalid, large size panics on 32-bit platforms.
CVSS Score
7.5
EPSS Score
0.003
Published
2026-04-21
Arithmetic over induction variables in loops were not correctly checked for underflow or overflow. As a result, the compiler would allow for invalid indexing to occur at runtime, potentially leading to memory corruption.
CVSS Score
9.8
EPSS Score
0.005
Published
2026-04-08