9.1

CVE-2020-35898: actix actix-utils Use After Free

Modified
AliasesGHSA-hhw2-pqhf-vmx2RUSTSEC-2020-0045
Published 31-12-2020Last modified 04-08-2024

Vulnerability summary

CVE-2020-35898 is a critical (CVSS 9.1) Use After Free vulnerability in actix actix-utils. EPSS estimates a 1.43% chance of exploitation in the next 30 days, higher than 72.7% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (NVD)
EPSS score
1.43%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Timeline

  1. 31-12-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in the actix-utils crate before 2.0.0 for Rust. The Cell implementation allows obtaining more than one mutable reference to the same data.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.43%

Chance of exploitation in the next 30 days

Percentile

73%

Versus all other CVEs

30-day change

Increase +0.02 pp

From 1.41% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (rustsec.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Actix1 product
Crates.Io1 product
  • actix-utils< 2.0.0 | ≥ 0.0.0-0, < 2.0.0

2 vendors · 2 products

References

6 links