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Fencer Intel
medium 5.5

CVE-2015-5301 json

Ipsilon denial of service by deleting a SAML2 Service Provider (SP)

published 2015-11-17 10 y ago modified 2026-06-17 4 mo ago also GHSA-9qp4-79q8-58pr , PYSEC-2015-42 , EUVD-2015-0038

cvss
5.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits
0
none known

Summary

providers/saml2/admin.py in the Identity Provider (IdP) server in Ipsilon 0.1.0 before 1.0.2 and 1.1.x before 1.1.1 does not properly check permissions, which allows remote authenticated users to cause a denial of service by deleting a SAML2 Service Provider (SP).

Patch / fix

  • pypi ipsilon 1.0.2, 1.2.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-5301 updated cvss 5.5

ipsilon: missing user authorization check when deleting a service provider

  • Red Hat Enterprise Linux 7 ipsilon, ipsilon-base, ipsilon-saml2, ipsilon-client, ipsilon-persona, ipsilon-authform, +6 more
    affected: no fix available

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.49% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.5 AV:N/AC:L/Au:S/C:N/I:P/A:P

Affected packages

ecosystem package affected fixed in
pypi ipsilon
>=0.1.0, <1.0.2
>=1.1.0, <1.2.0
1.0.2
1.2.0

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.