Security readout for executives and security teams
Plain-English summary
CVE-2026-27695 affects zae-limiter before 0.10.1. A busy or abusive entity can overload a single DynamoDB partition used for that entity’s rate-limit buckets, causing throttling and reduced availability for that entity, and possibly nearby data sharing the partition. The published fix is version 0.10.1.
Executive priority
Prioritize remediation for internet-facing or multi-tenant services that rely on zae-limiter. This is not a breach-enabling flaw, but it can reduce service availability for affected entities. Upgrade during the next practical maintenance window, sooner for high-volume services.
Technical view
zae-limiter used a DynamoDB partition key pattern of namespace/ENTITY#{id} for all buckets belonging to one entity. High write volume against that entity can hit DynamoDB per-partition throughput limits, creating throttling and availability degradation. The CVE maps to CWE-770 and has CVSS 3.1 score 4.3: network, low complexity, low privileges, no confidentiality or integrity impact.
Likely exposure
Exposure is limited to applications using zeroae zae-limiter versions before 0.10.1 with DynamoDB-backed rate limiting. Risk is higher where individual tenants, users, API keys, or entities can generate high request volume.
Exploitation context
The sources do not report active exploitation, and the CVE is not listed as KEV. Exploitation requires the ability to generate enough authenticated or privileged traffic for a target entity to cause DynamoDB hot-partition throttling. Impact is availability degradation, not data theft or code execution.
Researcher notes
Evidence is limited to the CVE record, GitHub advisory, and v0.10.1 release reference. The core issue is hot partitioning from shared per-entity DynamoDB keys. Avoid assuming broader product impact beyond zeroae zae-limiter before 0.10.1.
Mitigation direction
- Upgrade zae-limiter to version 0.10.1 or later.
- Review the GitHub advisory and release notes for vendor-specific upgrade guidance.
- Monitor DynamoDB throttling metrics for affected rate-limit tables.
- Assess high-traffic entities for partition hot-spot risk.
Validation and detection
- Inventory applications and dependencies for zae-limiter usage.
- Confirm deployed zae-limiter versions are 0.10.1 or later.
- Check DynamoDB metrics for throttled writes tied to rate-limit storage.
- Review tenant or entity traffic patterns for abnormal concentration.
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-770: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-27695 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
- Medium
- CVSS
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
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.
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:L/UI:N/S:U/C:N/I:N/A:L2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/zeroae/zae-limiter/security/advisories/GHSA-76rv-2r9v-c5m6CVE reference · x_refsource_CONFIRM
- https://github.com/zeroae/zae-limiter/releases/tag/v0.10.1CVE reference · x_refsource_MISC
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.
Allocation of Resources Without Limits or Throttling
Allocation of Resources Without Limits or Throttling represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.