CVE-2026-15538

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

0.54% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 42.8% of scored records. A rank, not a probability.

NVD base score

5.3 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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 2026-08-27.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

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.

Published

2026-07-13 06:00Z1 MO AGO

Last updated

2026-08-27 20:01Z7 DAYS AGO

Reserved

2026-07-12

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X

Weaknesses

• CWE-94Improper Control of Generation of Code ('Code Injection')Base
• CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')Variant

Data version

5.2

Document digest

aebfd518cc197e2466c621ded430a1498c0ab9850d3f36b56a33bff1e48f7131

• vuldb.comVDB-377888 | primefaces primereact API ObjectUtils.js ObjectUtils.mutateFieldData prototype pollutionhttps://vuldb.com/vuln/377888vdb-entrytechnical-description
• vuldb.comVDB-377888 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/vuln/377888/ctisignaturepermissions-required
• vuldb.comCVE-2026-15538 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-15538third-party-advisory
• vuldb.comSubmit #855024 | Node.js primereact 10.9.8 Prototype Pollutionhttps://vuldb.com/submit/855024third-party-advisory
• github.comhttps://github.com/primefaces/primereact/issues/8553issue-tracking
• github.comhttps://github.com/primefaces/primereact/security/advisories/GHSA-hgqw-899r-rc46related
• github.comhttps://github.com/primefaces/primereact/commit/61f182e11d9ef52032ff56f420da763a6938236fpatch
• github.comhttps://github.com/primefaces/primereact/releases/tag/10.9.9patch
• github.comhttps://github.com/Mantle-UI/mantle-ui/issues/50issue-tracking
• github.comhttps://github.com/primefaces/primereact/product