CVE-2026-5807Disclosure(hashicorp / vault)

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch hashicorp vault systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Vault is vulnerable to a denial-of-service condition where an unauthenticated attacker can repeatedly initiate or cancel root token generation or rekey operations, occupying the single in-progress operation slot. This prevents legitimate operators from completing these workflows. This vulnerability, CVE-2026-5807, is fixed in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0.

hashicorp CVEs Back to dashboard

0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://discuss.hashicorp.com/t/hcsec-2026-08-vault-vulnerable-to-denial-of-service-via-unauthenticated-root-token-generation-rekey-operations/77345

Other references

Weakness type (CWE)

CWE-770

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

vault

Threat summary

Patch or workaround signal is available
3 mentions across 2 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 3 signals
Disclosure: 2 classified signals
Peaked 1d ago at 2 mentions (2026-04-17); latest day: 1
3 total mentions across 2 days

Affected systems

Vendors

hashicorp

Products

vault

Deep dive

Activity timeline3 mentions / 2d

Signal classification2 categories

Disclosure

266.7%

Patch

133.3%

Referenced assets3 URLs

By indicator

Classification over time

Date	Total	Labels

2026-04-17	2	Disclosure2
2026-04-27	1	Patch1

Full discourse3 posts

Giuseppe Paternicola@giuseppe_1337164d
Patch
🚨 HIGH: CVE-2026-5807 (CVSS 7.5) HashiCorp Vault DoS vulnerability allows unauthenticated attackers to block root token generation/rekey operations. Fixed in Vault 2.0.0 (CE & Enterprise) #CVE #Vulnerability #PatchNow https://t.co/Dt8CEdJy1a
Post summary
The tweet announces a high‑severity DoS vulnerability (CVE-2026-5807) in HashiCorp Vault that allows unauthenticated attackers to block root token generation or rekey operations, and urges users to upgrade to Vault 2.0.0 for the available patch.
0000054
27 followersView on X
CVE@CVEnew174d
Disclosure
CVE-2026-5807 Vault is vulnerable to a denial-of-service condition where an unauthenticated attacker can repeatedly initiate or cancel root token generation or rekey operations, occu… https://www.cve.org/CVERecord?id=CVE-2026-5807
Post summary
The text announces CVE-2026-5807, a denial-of-service flaw in Vault that lets unauthenticated attackers repeatedly trigger or cancel root token operations. No PoC, exploit code, active exploitation, or patch information is provided.
0000071
57.2K followersView on X
Vulmon Vulnerability Feed@VulmonFeeds174d
Disclosure
CVE-2026-5807 Unauthenticated Denial of Service in Vault via Root Token Generati... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-5807 Customizable Vulnerability Alerts: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=4
Post summary
This tweet announces CVE-2026-5807 as an unauthenticated DoS vulnerability in HashiCorp Vault, linking to a vulnerability details page but providing no PoC, exploit code, active exploitation evidence, or patch information.
0000036
4.0K followersView on X

CPE platform detail2 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

2 of 2 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	hashicorp	vault	-	-	-
App	hashicorp	vault	-	-	-

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What researchers are saying

CVE-2026-5807

Giuseppe Paternicola[verified]@giuseppe_1337Patch

The tweet announces a high‑severity DoS vulnerability (CVE-2026-5807) in HashiCorp Vault that allows unauthenticated attackers to block root token generation or rekey operations, and urges users to upgrade to Vault 2.0.0 for the available patch.

CVE@CVEnewDisclosure

The text announces CVE-2026-5807, a denial-of-service flaw in Vault that lets unauthenticated attackers repeatedly trigger or cancel root token operations. No PoC, exploit code, active exploitation, or patch information is provided.

Vulmon Vulnerability Feed@VulmonFeedsDisclosure

This tweet announces CVE-2026-5807 as an unauthenticated DoS vulnerability in HashiCorp Vault, linking to a vulnerability details page but providing no PoC, exploit code, active exploitation evidence, or patch information.