How severe is CVE-2026-27695?

CVE-2026-27695 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-27695 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27695?

CVE-2026-27695 affects Zeroae Zae-limiter. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27695?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-27695 have an EU (EUVD) identifier?

Yes. CVE-2026-27695 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8642.

When was CVE-2026-27695 published?

CVE-2026-27695 was published on 2026-02-25 and last updated on 2026-06-17.

CVE-2026-27695

CVE-2026-27695 is a medium-severity vulnerability in Zeroae Zae-limiter with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8642
Weakness: CWE-770
Affected product: Zeroae Zae-limiter
Published: 2026-02-25
Last modified: 2026-06-17

Description

zae-limiter is a rate limiting library using the token bucket algorithm. Prior to version 0.10.1, all rate limit buckets for a single entity share the same DynamoDB partition key (`namespace/ENTITY#{id}`). A high-traffic entity can exceed DynamoDB's per-partition throughput limits (~1,000 WCU/sec), causing throttling that degrades service for that entity — and potentially co-located entities in the same partition. Version 0.10.1 fixes the issue.

Frequently asked questions

What is CVE-2026-27695?: zae-limiter is a rate limiting library using the token bucket algorithm. Prior to version 0.10.1, all rate limit buckets for a single entity share the same DynamoDB partition key (`namespace/ENTITY#{id}`). A high-traffic entity can exceed DynamoDB's per-partition throughput limits (~1,000 WCU/sec), causing throttling that degrades service for that entity — and potentially co-located entities in the same partition. Version 0.10.1 fixes the issue.
How severe is CVE-2026-27695?: CVE-2026-27695 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-27695 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27695?: CVE-2026-27695 affects Zeroae Zae-limiter. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27695?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-27695 have an EU (EUVD) identifier?: Yes. CVE-2026-27695 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8642.
When was CVE-2026-27695 published?: CVE-2026-27695 was published on 2026-02-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:zeroae:zae-limiter:*:*:*:*:*:*:*:*

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