7.5

CVE-2017-18077: brace_expansion_project brace_expansion Improper Input Validation

Modified
AliasesDEBIAN-CVE-2017-18077GHSA-832h-xg76-4gv6
Published 27-01-2018Last modified 17-09-2024

Vulnerability summary

CVE-2017-18077 is a high (CVSS 7.5) Improper Input Validation vulnerability in brace_expansion_project brace_expansion. EPSS estimates a 2.58% chance of exploitation in the next 30 days, higher than 85.2% of scored vulnerabilities. 2 public exploits are recorded.

Priority
Prioritisepublic exploit

Public exploit (GitHub, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.0 (NVD)
EPSS score
2.58%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits2github, reference

Advisory lineage

Upstream 0 · Downstream 1
RHSA-2020:2625

Timeline

  1. 27-01-2018
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

Description

index.js in brace-expansion before 1.1.7 is vulnerable to Regular Expression Denial of Service (ReDoS) attacks, as demonstrated by an expand argument containing many comma characters.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

2.58%

Chance of exploitation in the next 30 days

Percentile

85%

Versus all other CVEs

30-day change

No change 0.00 pp

From 2.58% on 05-10-2026

05-10-202604-11-2026

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

2 found
  • githubUnverified

    Brace Expansion

    Maturity: poc

  • referenceUnverified

    Exploit Reference (nodesecurity.io)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Brace_expansion_project1 product
Debian1 product
  • node-brace-expansion< 1.1.8-1
Npm1 product
  • brace-expansion< 1.1.7

3 vendors · 3 products

References

10 links