5

CVE-2026-34881: openstack glance Server-Side Request Forgery (SSRF)

CVSS: 5.0v3.1MediumModified
AliasesGHSA-mc26-q38v-83gvPYSEC-2026-2492RHSA-2026:39812
Published 31-03-2026Last modified 14-08-2026
Open JSON

Vulnerability summary

CVE-2026-34881 is a medium (CVSS 5.0) Server-Side Request Forgery (SSRF) vulnerability in openstack glance. EPSS estimates a 0.44% chance of exploitation in the next 30 days, higher than 36.6% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.0/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.44%
0%100%
Low · +0.17 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
RHSA-2026:54757USN-8199-1

Timeline

  1. 31-03-2026
    PublishedVulnerability first disclosed.
  2. 14-08-2026
    Last modifiedVulnerability information updated.

Description

OpenStack Glance before 29.1.1, 30.x before 30.1.1, and 31.0.0 is affected by Server-Side Request Forgery (SSRF). By use of HTTP redirects, an authenticated user can bypass URL validation checks and redirect to internal services. Only glance image import functionality is affected. In particular, the web-download and glance-download import methods are subject to this vulnerability, as is the optional (not enabled by default) ovf_process image import plugin.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

0.44%

Chance of exploitation in the next 30 days

Percentile

37%

Versus all other CVEs

30-day change

+0.17 pp

From 0.27% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.44%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugs.launchpad.net)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Redhat2 products
  • openstack-glance< 1:26.1.1-18.0.20260422134725.c2ac316.el9ost
  • python3-glance< 1:26.1.1-18.0.20260422134725.c2ac316.el9ost
Debian1 product
  • glance< 2:25.1.0-2+deb12u2 | < 2:30.0.0-3+deb13u1 | < 2:31.0.0-3
Openstack1 product
  • glance< 29.1.1 | ≥ 30.0.0, < 30.1.1 | 31.0.0
PyPI1 product
  • glance< 29.2.0 | ≥ 30.0.0, < 30.2.0 | ≥ 31.0.0, < 31.1.0
Ubuntu1 product
  • glance< 2:16.0.1-0ubuntu1.1+esm2 | < 2:20.2.0-0ubuntu1.2+esm2

5 vendors · 6 products

References

20 links
Show all 20 references