6.5

CVE-2023-50463: caddyserver caddy Authentication Bypass by Spoofing

CVSS: 6.5v3.1MediumModified
AliasesGHSA-rxg9-hgq7-8pwxGO-2023-2394
Published 10-12-2023Last modified 02-08-2024
Open JSON
Some data may be incomplete
  • 1 reference with an unsupported link type was hidden.

Vulnerability summary

CVE-2023-50463 is a medium (CVSS 6.5) Authentication Bypass by Spoofing vulnerability in caddyserver caddy. EPSS estimates a 0.66% chance of exploitation in the next 30 days, higher than 50.6% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.66%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 10-12-2023
    PublishedVulnerability first disclosed.
  2. 02-08-2024
    Last modifiedVulnerability information updated.

Description

The caddy-geo-ip (aka GeoIP) middleware through 0.6.0 for Caddy 2, when trust_header X-Forwarded-For is used, allows attackers to spoof their source IP address via an X-Forwarded-For header, which may bypass a protection mechanism (trusted_proxy directive in reverse_proxy or IP address range restrictions).

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.66%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

0.00 pp

From 0.66% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.66%

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

Caddyserver1 product
Github.com/shift721 product
  • caddy-geo-ip≤ 0.6.0 | All versions (No fix recorded)

2 vendors · 2 products

References

4 links