Common Weakness Enumeration
CWE-362
Allowed-with-ReviewConcurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Abstraction: Class · Status: Draft
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
3206 vulnerabilities reference this CWE, most recent first.
CVE-2026-7846 (GCVE-0-2026-7846)
Vulnerability from cvelistv5 – Published: 2026-05-05 16:00 – Updated: 2026-05-05 16:11
VLAI
EPSS
VEX
Title
chatchat-space Langchain-Chatchat OpenAI-Compatible File Upload API openai_routes.py files toctou
Summary
A vulnerability has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. Impacted is the function files of the file libs/chatchat-server/chatchat/server/api_server/openai_routes.py of the component OpenAI-Compatible File Upload API. Such manipulation of the argument file.filename leads to time-of-check time-of-use. Access to the local network is required for this attack to succeed. The attack requires a high level of complexity. The exploitability is considered difficult. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-05 16:11 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/361125 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/361125/cti | signaturepermissions-required |
| https://vuldb.com/submit/807795 | third-party-advisory |
| https://github.com/chatchat-space/Langchain-Chatc… | issue-tracking |
| https://github.com/3em0/cve_repo/blob/main/Langch… | exploit |
| https://github.com/chatchat-space/Langchain-Chatchat/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| chatchat-space | Langchain-Chatchat |
Affected:
0.3.1.0
Affected: 0.3.1.1 Affected: 0.3.1.2 Affected: 0.3.1.3 |
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CVE-2026-7724 (GCVE-0-2026-7724)
Vulnerability from cvelistv5 – Published: 2026-05-04 02:45 – Updated: 2026-05-05 00:54 X_Open Source
VLAI
EPSS
VEX
Title
PrefectHQ prefect Webhook/Notification validate_restricted_url toctou
Summary
A vulnerability has been found in PrefectHQ prefect up to 3.6.28.dev1. Affected by this vulnerability is the function validate_restricted_url of the component Webhook/Notification. The manipulation leads to time-of-check time-of-use. It is possible to initiate the attack remotely. The attack is considered to have high complexity. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 3.6.28.dev2 addresses this issue. The identifier of the patch is 7c70ac54a5e101431d83b9f2681ec88d5e0021ed. Upgrading the affected component is advised. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-05 00:54 UTC
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/360900 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/360900/cti | signaturepermissions-required |
| https://vuldb.com/submit/807303 | third-party-advisory |
| https://linear.app/prefect/issue/OSS-7874/fix-dns… | issue-tracking |
| https://github.com/PrefectHQ/prefect/pull/21591 | issue-trackingpatch |
| https://gist.github.com/nedlir/fa99777e8989414585… | exploit |
| https://github.com/PrefectHQ/prefect/commit/7c70a… | patch |
| https://github.com/PrefectHQ/prefect/releases/tag… | patch |
| https://github.com/PrefectHQ/prefect/ | product |
Impacted products
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CVE-2026-7432 (GCVE-0-2026-7432)
Vulnerability from cvelistv5 – Published: 2026-05-12 14:21 – Updated: 2026-05-13 03:57
VLAI
EPSS
VEX
Summary
A race condition in Ivanti Secure Access Client before 22.8R6 allows a locally authenticated user to escalate privileges to SYSTEM
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-12 00:00 UTC
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ivanti | Secure Access Client |
Unaffected:
22.8R6
|
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CVE-2026-7366 (GCVE-0-2026-7366)
Vulnerability from cvelistv5 – Published: 2026-08-12 21:19 – Updated: 2026-08-13 13:05
VLAI
EPSS
VEX
Title
IBM DataPower Gateway affected by HTTP request header leakage in XML-Firewall
Summary
IBM DataPower Gateway 11.0.0.0 through 11.0.0.1 and IBM DataPower Gateway 10.5.0.0 through 10.5.0.21 and IBM DataPower Gateway 10.6.0.0 through 10.6.0.9 allows a race condition that results in improper isolation of request state when handling the built‑in X‑Client‑IP header. Under concurrent request processing, X‑Client‑IP values may be contaminated across requests, enabling IP spoofing and disclosure of other clients’ IP addresses.
Severity
4.2 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 13:04 UTC
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7282770 | vendor-advisorypatch |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | DataPower Gateway 11.0.0 |
Affected:
11.0.0.0 , ≤ 11.0.0.1
(semver)
cpe:2.3:a:ibm:datapower_gateway_1100:11.0.0.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:datapower_gateway_1100:11.0.0.1:*:*:*:*:*:*:* |
|
| IBM | DataPower Gateway 10.5.0 |
Affected:
10.5.0.0 , ≤ 10.5.0.21
(semver)
cpe:2.3:a:ibm:datapower_gateway_1050:10.5.0.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:datapower_gateway_1050:10.5.0.21:*:*:*:*:*:*:* |
|
| IBM | DataPower Gateway 10.6.0 |
Affected:
10.6.0.0 , ≤ 10.6.0.9
(semver)
cpe:2.3:a:ibm:datapower_gateway_1060:10.6.0.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:datapower_gateway_1060:10.6.0.9:*:*:*:*:*:*:* |
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CVE-2026-7208 (GCVE-0-2026-7208)
Vulnerability from cvelistv5 – Published: 2026-09-14 13:24 – Updated: 2026-09-14 18:12
VLAI
EPSS
VEX
Title
Yealink SIP-T33G < 124.87.0.0 Race Condition via Diagnostic File Deletion
Summary
Yealink SIP-T33G firmware versions 124.86.x.x prior to 124.87.0.0 contain a race condition vulnerability that allows authenticated attackers to interrupt active diagnostic processes by concurrently deleting output files written to predictable paths under the diagnostic directory. Attackers can trigger a diagnostic operation such as traceroute or ping and simultaneously invoke the file deletion endpoint to terminate the running process, leaving the system in an inconsistent state.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 16:14 UTC
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.yealink.com/en/trust-center/security-… | vendor-advisorypatch |
| https://www.yealink.com/en/product-detail/ip-phone-t33g | product |
| https://www.vulncheck.com/advisories/yealink-sip-… | third-party-advisory |
Impacted products
Date Public
2026-09-11 00:00
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CVE-2026-5947 (GCVE-0-2026-5947)
Vulnerability from cvelistv5 – Published: 2026-05-20 13:10 – Updated: 2026-09-01 12:05
VLAI
EPSS
VEX
Title
SIG(0) validation during query flood may lead to undefined behavior
Summary
Undefined behavior may result due to a race condition leading to a use-after-free violation. If BIND receives an incoming DNS message signed with SIG(0), it begins work to validate that signature. If, during that validation, the "recursive-clients" limit is reached (as would occur during a query flood), and that same DNS message is discarded per the limit, there is a brief window of time while the SIG(0) validation may attempt to read the now-discarded DNS message.
This issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and 9.20.9-S1 through 9.20.22-S1.
BIND 9 versions 9.18.28 through 9.18.49 and 9.18.28-S1 through 9.18.49-S1 are NOT affected.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-20 13:39 UTC
CWE
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-5947 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.23 | patch |
| https://downloads.isc.org/isc/bind9/9.21.22 | patch |
| https://access.redhat.com/security/cve/CVE-2026-5947 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2479772 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:7412 | vendor-advisoryx_refsource_REDHAT |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.20.0 , ≤ 9.20.22
(custom)
Affected: 9.21.0 , ≤ 9.21.21 (custom) Affected: 9.20.9-S1 , ≤ 9.20.22-S1 (custom) Unaffected: 9.18.28 , ≤ 9.18.49 (custom) Unaffected: 9.18.28-S1 , ≤ 9.18.49-S1 (custom) cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* |
|
| Red Hat | Red Hat Hardened Images |
Unaffected:
9.18.48-1.1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
Date Public
2026-05-20 00:00
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CVE-2026-5774 (GCVE-0-2026-5774)
Vulnerability from cvelistv5 – Published: 2026-04-10 12:10 – Updated: 2026-04-10 12:41
VLAI
EPSS
VEX
Title
Juju API Server Denial of Service and Authentication Replay via Unsynchronized Token Map
Summary
Improper synchronization of the userTokens map in the API server in Canonical Juju 4.0.5, 3.6.20, and 2.9.56 may allow an authenticated user to possibly cause a denial of service on the server or possibly reuse a single-use discharge token.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-10 12:41 UTC
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/juju/juju/security/advisories/… | vdb-entryvendor-advisory |
| https://github.com/juju/juju/pull/22206 | patchissue-tracking |
| https://github.com/juju/juju/pull/22205 | patchissue-tracking |
Impacted products
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CVE-2026-5120 (GCVE-0-2026-5120)
Vulnerability from cvelistv5 – Published: 2026-07-01 12:16 – Updated: 2026-07-01 13:36
VLAI
EPSS
VEX
Title
Race Condition vulnerability affecting BIOVIA Workbook from Release 2021 through Release 2026
Summary
A Race Condition vulnerability affecting BIOVIA Workbook from Release 2021 through Release 2026 could allow a user to access unauthorized data from another user.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-01 13:36 UTC
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Dassault Systèmes | BIOVIA Workbook |
Affected:
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CVE-2026-4635 (GCVE-0-2026-4635)
Vulnerability from cvelistv5 – Published: 2026-05-22 10:28 – Updated: 2026-05-22 12:06
VLAI
EPSS
VEX
Title
Persistent notification timing attack causing server denial of service
Summary
Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to archive the channel before removing persistent notifications which allows authenticated user to crash the server via timing the creation of persistent notification message between the server deleting existing persistent notifications and archiving the channel.. Mattermost Advisory ID: MMSA-2026-00637
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-22 12:06 UTC
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
11.6.0 , ≤ 11.6.0
(semver)
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CVE-2026-1199 (GCVE-0-2026-1199)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:15 – Updated: 2026-08-18 13:35
VLAI
EPSS
VEX
Title
API and Frontend login lockout race condition
Summary
Zabbix API and Frontend login lockout mechanism has a flaw where several unsuccessful login requests are not properly counted towards the block counter if sent simultaneously, potentially allowing for more password guesses than intended.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 12:54 UTC
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
1 reference
Impacted products
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Mitigation
Architecture and Design
In languages that support it, use synchronization primitives. Only wrap these around critical code to minimize the impact on performance.
Mitigation
Architecture and Design
Use thread-safe capabilities such as the data access abstraction in Spring.
Mitigation
Architecture and Design
- Minimize the usage of shared resources in order to remove as much complexity as possible from the control flow and to reduce the likelihood of unexpected conditions occurring.
- Additionally, this will minimize the amount of synchronization necessary and may even help to reduce the likelihood of a denial of service where an attacker may be able to repeatedly trigger a critical section (CWE-400).
Mitigation
Implementation
When using multithreading and operating on shared variables, only use thread-safe functions.
Mitigation
Implementation
Use atomic operations on shared variables. Be wary of innocent-looking constructs such as "x++". This may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read, followed by a computation, followed by a write.
Mitigation
Implementation
Use a mutex if available, but be sure to avoid related weaknesses such as CWE-412.
Mitigation
Implementation
Avoid double-checked locking (CWE-609) and other implementation errors that arise when trying to avoid the overhead of synchronization.
Mitigation
Implementation
Disable interrupts or signals over critical parts of the code, but also make sure that the code does not go into a large or infinite loop.
Mitigation
Implementation
Use the volatile type modifier for critical variables to avoid unexpected compiler optimization or reordering. This does not necessarily solve the synchronization problem, but it can help.
Mitigation MIT-17
Architecture and Design
Operation
Strategy: Environment Hardening
Run your code using the lowest privileges that are required to accomplish the necessary tasks [REF-76]. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.
CAPEC-26: Leveraging Race Conditions
The adversary targets a race condition occurring when multiple processes access and manipulate the same resource concurrently, and the outcome of the execution depends on the particular order in which the access takes place. The adversary can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance, a race condition can occur while accessing a file: the adversary can trick the system by replacing the original file with their version and cause the system to read the malicious file.
CAPEC-29: Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. A typical example is file access. The adversary can leverage a file access race condition by "running the race", meaning that they would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the adversary could replace or modify the file, causing the application to behave unexpectedly.