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VulnerabilityPublished

CVE-2024-9517: Refresh Token Grant Type

Source GCVE Database

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Authoritative record:CVE-2024-9517· Medium 4.9

Not known to be exploited · CVSS 4.9 Medium · fixed in 4.5.0.9 : update WSO2 API Manager when convenient.

Data as of 2 Nov 2026, 13:31 UTC

CVSS 3.1 base score
4.9Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (WSO2)CVSS 3.14.9
Patch
Available – fixed in 4.5.0.9, 4.4.0.25, 4.3.0.62 +26
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 2 Nov 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 2 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
WSO2WSO2 API ManagerAffected
  • >=4.5.0 <4.5.0.9
Fixed in
  • 4.5.0.9
WSO2WSO2 API ManagerAffected
  • >=4.4.0 <4.4.0.25
Fixed in
  • 4.4.0.25
WSO2WSO2 API ManagerAffected
  • >=4.3.0 <4.3.0.62
Fixed in
  • 4.3.0.62
WSO2WSO2 API ManagerAffected
  • >=4.2.0 <4.2.0.149
Fixed in
  • 4.2.0.149
WSO2WSO2 API ManagerAffected
  • >=4.1.0 <4.1.0.214
Fixed in
  • 4.1.0.214
WSO2WSO2 API ManagerAffected
  • >=4.0.0 <4.0.0.315
Fixed in
  • 4.0.0.315

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, organizations should consider additional compensating controls such as monitoring refresh token usage and enforcing stricter token revocation policies if possible.

Description

CVE-2024-9517 is a vulnerability in WSO2 products where the refresh token grant type does not re-validate the account status before issuing new access tokens. This flaw allows attackers to obtain valid access tokens for accounts that have been blocked, bypassing account lockout protections. The vulnerability can lead to unauthorized access and potential privilege escalation or data exfiltration depending on the compromised account's permissions.

References

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