01 Record
CVE-2026-93471
Unbounded SAML message decompression in esaml allows memory exhaustion
HighPUBLISHEDCNA: EEF
CNA base score8.7 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
02 Description
Unbounded SAML message decompression in esaml allows memory exhaustion
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.43% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 37.7% of scored records. A rank, not a probability.
- NVD base score
- 8.7 (CVSS v4.0), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- NVD analysis status
- Deferred. NVD last modified this record on 2026-10-22.
- 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.
04 Metadata
- Published
- 2026-10-22 06:59Z7 DAYS AGO
- Last updated
- 2026-10-22 06:59Z7 DAYS AGO
- Reserved
- 2026-10-06
- Assigning CNA
- EEF
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.7)
- CNA CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- Weaknesses
- CWE-409Improper Handling of Highly Compressed Data (Data Amplification)Base
- Data version
- 5.2
- Document digest
- ce4a851b4a85bcee87ba701117fa68fe6f9055ec65931a62e59f6d141ebe4814
05 Affected products
06 References
- cna.erlef.orgEEF CNA record for CVE-2026-93471https://cna.erlef.org/cves/CVE-2026-93471.html
- osv.devOSV record EEF-CVE-2026-93471https://osv.dev/vulnerability/EEF-CVE-2026-93471
- github.comIntroducing commit deeb843 in handnot2/esamlhttps://github.com/handnot2/esaml/commit/deeb84378d5c82153b470e99d24f77c38afca14a
- github.comIntroducing commit deeb843 in arekinath/esamlhttps://github.com/arekinath/esaml/commit/deeb84378d5c82153b470e99d24f77c38afca14a
- github.comIntroducing commit deeb843 in dropbox/esamlhttps://github.com/dropbox/esaml/commit/deeb84378d5c82153b470e99d24f77c38afca14a