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CVE-2020-35918

19
FAUCET Score

CVE-2020-35918 is a denial-of-service vulnerability affecting the branca crate for Rust, specifically versions prior to 0.10.0, and products like hakobaito branca. The flaw allows an authenticated local attacker to trigger a panic by decoding tokens containing invalid base62 data. With a CVSS score of 5.5 (Medium), this vulnerability has a high impact on availability but requires local access and no user interaction. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.10.0CPE matchmatch criteria
cpe:2.3:a:hakobaito:branca:*:*:*:*:*:rust:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 91st percentile among its peer group of 15,938 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
rustpatch availablevia ghsa
Product: brancaFixed in: 0.10.0

Vendor Advisories (1)

rustGHSA-c9rv-3jmq-527wmedium

Unexpected panic when decoding tokens in branca

Aug 25, 2021

References

github.com / return/branca/issues/24
ExploitIssue TrackingPatchThird Party Advisory
github.com / tuupola/branca-spec/issues/22
Third Party Advisory
rustsec.org / advisories/RUSTSEC-2020-0075.html
ExploitThird Party Advisory