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01 Record

CVE-2026-48590

Element and Attribute Names Injected Verbatim into XML Output in xml_builder

LowPUBLISHEDCNA: EEF
CNA base score2.1 CVSS v4.0CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N
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02 Description

Element and Attribute Names Injected Verbatim into XML Output in xml_builder

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • 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
0.22% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 13.1% of scored records. A rank, not a probability.
NVD base score
2.1 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/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
Awaiting Analysis. NVD last modified this record on 2026-10-16.
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
2026-08-21 09:51Z2 MO AGO
Last updated
2026-08-21 12:25Z2 MO AGO
Reserved
2026-05-22
Assigning CNA
EEF
Record state
PUBLISHED
Severity
Low (CVSS 2.1)
CNA CVSS vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N
Weaknesses
  • CWE-91XML Injection (aka Blind XPath Injection)Base
Data version
5.2
Document digest
be3b6b487d7e42f3d8708e9b20ea7a651f0239926657481d4c0b46dfeb75fb2b

05 Affected products

VendorProductVersionsPlatforms
joshnussxml_builder0.0.1 to < 2.4.1, 9fb49131ad3ee146a4c9db9bc175bdffe32e30a0 to < d5c0aec32a8eecbb440fb9bbb0f59d4d188d5859—

06 References