02 Records
FEED: ACQUIRING
01 RecordSTATE: PUBLISHED
02 Description
CNA: CPANSecNet::SAML2 versions before 0.86 for Perl allow SAML authentication bypass via XML signature wrapping because new_from_xml reads assertion identity with document-wide XPath instead of the signed subtree
03 Exploitation and scoring
SRC: CISA, FIRST, NVD, RED HAT- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.- EPSS probability
- 0.20% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Ranks above 9.6% of scored records. A rank, not a probability.
- NVD base score
- 8.1 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-08-06.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
SCHEMA: 5.2
- Published
- 2026-08-03 13:24Z1 MO AGO
- Last updated
- 2026-08-03 20:01Z1 MO AGO
- Reserved
- 2026-07-28
- Assigning CNA
- CPANSec
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.1)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
- Weaknesses
- CWE-347Improper Verification of Cryptographic SignatureBase
- Data version
- 5.2
- Document digest
- 5a61e724d76451cc7ba1e67da032d62192b40680650cc89a0453de68e13cb8b0
05 Affected products
PAIRS: 1VendorProductVersionsPlatforms
SRC: CNA
Upgrade to Net::SAML2 0.86 or later, which anchors identity extraction at the assertion subtree covered by a signature that validates against the configured trust anchor.