Apache Thrift THeaderTransport transform heap-based overflow

| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 6.3 | $5k-$25k | 0.00 |
Summary
A vulnerability was found in Apache Thrift. It has been declared as critical. This impacts the function THeaderTransport::transform of the component THeaderTransport. Executing a manipulation can lead to heap-based overflow.
The identification of this vulnerability is CVE-2026-91135. The attack may be launched remotely. There is no exploit available.
Details
A vulnerability classified as critical was found in Apache Thrift (version now known). This vulnerability affects the function THeaderTransport::transform of the component THeaderTransport. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect confidentiality, integrity, and availability.
This vulnerability was named CVE-2026-91135. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 10/02/2026).
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
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Product
Vendor
Name
License
Website
- Vendor: https://www.apache.org/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.3VulDB Meta Temp Score: 6.3
VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔒
VulDB Reliability: 🔍
CVSSv2
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| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Heap-based overflowCWE: CWE-122 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
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Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
10/02/2026 Advisory disclosed10/02/2026 VulDB entry created
10/02/2026 VulDB entry last update
Sources
Vendor: apache.orgStatus: Not defined
CVE: CVE-2026-91135 (🔒)
GCVE (CVE): GCVE-0-2026-91135
GCVE (VulDB): GCVE-100-412894
Entry
Created: 10/02/2026 04:37Changes: 10/02/2026 04:37 (48)
Complete: 🔍
Cache ID: 216::103
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