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VulnerabilityPublished

CVE-2026-65654: Temporal Technologies temporalio/ringpop-go · Unthrottled Resource Allocation

Affects Temporal Technologies temporalio/ringpop-goSource CVE Database V5

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Not known to be exploited · CVSS 8.7 High : upgrade to 0.0.0-20260724173031-c317effcdc8b soon.

Data as of 5 Nov 2026, 23:24 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 47% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.0.0-20260724173031-c317effcdc8b
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Upgrade temporalio/ringpop-go and github.com/temporalio/ringpop-go to 0.0.0-20260724173031-c317effcdc8b.

Affected software

ProductAffectedFixed in
Temporal Technologies, Inc.temporalio/ringpop-goAffected
  • >=0.0.0-20160824133849-d0de5fe13330 <0.0.0-20260724173031-c317effcdc8b
Fixed in
  • 0.0.0-20260724173031-c317effcdc8b
Gogithub.com/temporalio/ringpop-gopkg:golang/github.com/temporalio/ringpop-goOther threatsAffected
  • >=0.0.0-20160824133849-d0de5fe13330 <0.0.0-20260724173031-c317effcdc8b
Fixed in
  • 0.0.0-20260724173031-c317effcdc8b

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

If you cannot patch yet, restricting network access to Ringpop TChannel listeners and monitoring for unusual membership update traffic may help mitigate risk.

Description

github.com/temporalio/ringpop-go enforces configured LabelOptions limits when an application changes the local node's labels, but affected versions do not apply those limits to label maps received in SWIM membership changes. A network peer that can reach a live Ringpop TChannel listener can repeatedly submit changes for distinct member addresses containing label keys, values, or counts that exceed the receiver's configured limits. Accepted labels are retained in the member list and disseminated to peers, allowing memory and gossip-bandwidth consumption to exceed configured bounds and potentially making the hosting process unavailable. The fix validates peer-supplied label maps before they are retained or disseminated. Availability only; no confidentiality or integrity impact was identified.

References

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