Cryptographically weak random number generation in github.com/dinever/golf

Also known as GHSA-q9qr-jwpw-3qvv, GO-2020-0045

Published 5 y ago 2021-04-14 · modified 4 mo ago 2026-06-17 · JSON

CVSS

8.8

v3.1 · CNA

CISA KEV

not known exploited

EPSS

0.4%

percentile 36%

Public exploits

none known

CSRF tokens are generated using math/rand, which is not a cryptographically secure random number generator, allowing an attacker to predict values and bypass CSRF protections with relatively few requests.

CISA SSVC assessment

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 18 mo ago 2025-04-11

Exploit prediction (EPSS)

0.41% probability of exploitation in the next 30 days, higher than 36% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
CISA ADP	3.1	8.8	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`
NVD	3.1	8.8	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`
CNA	3.1	8.8	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`
GitHub	3.1	8.8	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`

Affected packages

Ecosystem	Package	Affected	Fixed in
go	`github.com/dinever/golf`	<0.3.0	0.3.0

Affected products

github.com/dinever/golf github.com/dinever/golf

Classification

Weakness

CWE-352 Cross-Site Request Forgery
CWE-332 Insufficient Entropy in PRNG

References

github.com /dinever/golf/pull/24 · x_transferred
github.com /dinever/golf/commit/3776f338be48b5bc5e8cf9faff7851fc52a3f1fe · x_transferred
github.com /dinever/golf/issues/20 · x_transferred
pkg.go.dev /vuln/GO-2020-0045 · x_transferred
nvd.nist.gov /vuln/detail/CVE-2016-15005 · advisory
github.com /dinever/golf · package
github.com /dinever/golf/releases/tag/v0.3.0 · web

Sources

CVE List: CVE-2016-15005
GitHub Advisory: GHSA-q9qr-jwpw-3qvv
NVD: CVE-2016-15005
OSV: GO-2020-0045

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.

Summary