Security readout for executives and security teams
Plain-English summary
Apache Lucy can crash or corrupt memory while reporting errors for malformed JSON. The CVE rates this critical because a remote, unauthenticated attacker may reach the flaw without user interaction. Lucy is retired, and Apache does not plan a fix. Organizations still using it should replace it or ensure only trusted users can submit input.
Executive priority
Treat confirmed, untrusted-input deployments as urgent because the product is retired and no fix is planned. Prioritize containment immediately and replacement promptly. Systems without Lucy are unaffected; systems with Lucy limited to trusted input still require migration because access restriction reduces exposure but does not remove the flaw.
Technical view
CVE-2026-61486 is a stack-based buffer overflow (CWE-121) in Apache Lucy’s JSON parser error reporter, triggered by malformed input. The supplied record states that all versions are affected and assigns CVSS 3.1 score 9.8. The public bundle does not establish a specific code-execution outcome, affected deployment pattern, proof of concept, or patched release.
Likely exposure
Exposure is most concerning where Apache Lucy processes JSON influenced by untrusted or network-accessible users. Actual exposure depends on whether Lucy is deployed, whether malformed JSON reaches the vulnerable parser, and what access controls exist. The supplied sources do not identify affected downstream products or default internet-facing configurations.
Exploitation context
The CVE is not listed as CISA KEV in the supplied bundle, and no cited source establishes active exploitation. The CVSS vector indicates remote, low-complexity, unauthenticated reachability without user interaction, but that scoring does not prove exploitation or reliable code execution.
Researcher notes
The vulnerable path is described only as the JSON parser error reporter handling malformed input. The bundle provides no crash details, exploit primitive, proof of concept, or affected call paths. It also contains structured affected-version metadata that appears inconsistent with the narrative statement that all versions are affected; validate inventory decisions against the vendor advisory and CVE record.
Mitigation direction
- Plan migration from retired Apache Lucy to a supported alternative.
- Restrict Lucy instances and input paths to trusted users only.
- Block untrusted JSON from reaching Lucy wherever operationally feasible.
- Monitor Apache guidance; no fixed Lucy release is identified.
Validation and detection
- Inventory applications, services, containers, and dependencies for Apache Lucy.
- Determine which Lucy components parse JSON from user-controlled or network-supplied sources.
- Verify network and application controls limit access to trusted users.
- Confirm migration plans remove Lucy rather than relying on an unavailable patch.
- Review logs for malformed JSON errors, crashes, or unexplained service restarts.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-121: Exact CWE lookup
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Open ATT&CK lookupCVE-2026-61486 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://lists.apache.org/thread/z88yv1z19ppsd4td4nqtg7q72fvqh01bCVE reference, apache · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Stack-based Buffer Overflow
Stack-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.