8.2

CVE-2026-49234: nlnetlabs routinator Improper Input Validation

CVSS: 8.2v4.0HighAnalyzed
AliasesGHSA-gc6q-cwcj-3vh9
Published 08-06-2026Last modified 08-06-2026
Open JSON

Vulnerability summary

CVE-2026-49234 is a high (CVSS 8.2) Improper Input Validation vulnerability in nlnetlabs routinator. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 25.1% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.2/10
010
High · v4.0 (CVE.org)
EPSS score
0.33%
0%100%
Low · +0.07 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 08-06-2026
    PublishedVulnerability first disclosed.
  2. 08-06-2026
    Last modifiedVulnerability information updated.

Description

When sending a specifically crafted non-UTF-8 string as select-asn query parameter to the /api/v1/origins endpoint, Routinator crashes. This only affects users who allow API access from untrusted networks.

CVSS metrics

5 scores · 3 sources · 2 versions

EPSS trend

Probability

0.33%

Chance of exploitation in the next 30 days

Percentile

25%

Versus all other CVEs

30-day change

+0.07 pp

From 0.27% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.33%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Crates.Io1 product
  • routinator< 0.15.2
Nlnetlabs1 product

2 vendors · 2 products

References

4 links