EUVD-2026-53190
GHSA-7wjr-wh6f-62xm
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-reachable library processing external input with no auth required; CWE-789 in C yields high availability impact and potential low-severity memory disclosure.
Primary rating from Vendor (apache).
CVSS VectorVendor: apache
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
1DescriptionCVE.org
UNSUPPORTED WHEN ASSIGNED Memory Allocation with Excessive Size Value vulnerability in Apache Lucy.
This issue affects Apache Lucy: all versions.
As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative or restrict access to the instance to trusted users.
NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
AnalysisAI
Memory allocation with excessive size value in Apache Lucy (all versions) enables potential denial-of-service and information disclosure against a retired, unsupported search library. The vulnerability stems from CWE-789, where the library processes externally supplied size values without adequate bounds checking, potentially allowing an attacker to trigger abnormal memory allocation behaviour. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the ability to submit search or indexing requests to an Apache Lucy-backed service - whether over a network interface or locally, depending on how the library is exposed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | No CVSS vector or score has been assigned, so metric-based risk assessment relies on inference from the CWE class and product context. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker sends a crafted search or indexing request to a service backed by Apache Lucy, supplying an excessively large size value in a field that is passed to a memory allocation routine. The library allocates an oversized or wrap-around buffer, leading to process crash (denial of service) or an out-of-bounds memory read that leaks heap contents. … |
| Remediation | No vendor-released patch has been identified at time of analysis, and no patch will be released - the project is permanently retired. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
More in Apache Lucy
View allInsecure deserialization (CWE-502) in Apache Lucy affects all versions of this retired full-text search engine library,
Stack-based buffer overflow in Apache Lucy (all versions) enables potential arbitrary code execution through crafted inp
Uncontrolled Recursion in Apache Lucy, a retired full-text search library, enables remote unauthenticated attackers to c
Same technique Information Disclosure
View allShare
External POC / Exploit Code
Leaving vuln.today