CVE-2021-43188

Access-token exposure via incomplete iOS protection

Published Nov 9, 2021 · Updated Aug 4, 2024

Incomplete token protection in JetBrains YouTrack Mobile before 2021.2 allows attackers to obtain iOS access tokens. JetBrains identifies three internal iOS defects but has not disclosed the storage or handling locus or the operation that leaves the tokens insufficiently protected. The required access path is undisclosed, and published sources establish token exposure but not code execution or service interruption.

CVSS severity7.3
High
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incomplete token protection in JetBrains YouTrack Mobile before 2021.2 allows attackers to obtain iOS access tokens. JetBrains identifies three internal iOS defects but has not disclosed the storage or handling locus or the operation that leaves the tokens insufficiently protected. The required access path is undisclosed, and published sources establish token exposure but not code execution or service interruption.

The record

CVE
CVE-2021-43188
Published
Nov 9, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-311
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Nov 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-311Missing Encryption of Sensitive Data

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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