CVE-2026-62641: CWE-770 Allocation of Resources Without Limits or Throttling in Roundcube Webmail
CVE-2026-62641 is a medium severity vulnerability in Roundcube Webmail affecting versions before 1.6.17 and 1.7.x before 1.7.2. It involves the TNEF decoder being vulnerable to denial of service via a crafted compressed-RTF size, leading to allocation of resources without limits or throttling.
AI Analysis
Technical Summary
This vulnerability (CWE-770) in Roundcube Webmail's TNEF decoder allows an attacker to cause a denial of service by sending a specially crafted compressed-RTF payload that triggers uncontrolled resource allocation. The affected versions are prior to 1.6.17 and 1.7.2 in the 1.6.x and 1.7.x branches respectively. The vulnerability does not impact confidentiality or integrity but can cause service disruption due to resource exhaustion.
Potential Impact
The impact is limited to denial of service (availability) caused by resource exhaustion when processing malicious compressed-RTF data. There is no impact on confidentiality or integrity according to the CVSS vector and description.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the current data. Users should monitor vendor communications for updates and consider applying any forthcoming patches for versions before 1.6.17 and 1.7.2. Until a patch is available, limiting exposure to untrusted compressed-RTF data may reduce risk.
CVE-2026-62641: CWE-770 Allocation of Resources Without Limits or Throttling in Roundcube Webmail
Description
CVE-2026-62641 is a medium severity vulnerability in Roundcube Webmail affecting versions before 1.6.17 and 1.7.x before 1.7.2. It involves the TNEF decoder being vulnerable to denial of service via a crafted compressed-RTF size, leading to allocation of resources without limits or throttling.
CVSS v3.1
Score 4.3medium
Affected software
pkg:github/roundcube/roundcubemailRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-770) in Roundcube Webmail's TNEF decoder allows an attacker to cause a denial of service by sending a specially crafted compressed-RTF payload that triggers uncontrolled resource allocation. The affected versions are prior to 1.6.17 and 1.7.2 in the 1.6.x and 1.7.x branches respectively. The vulnerability does not impact confidentiality or integrity but can cause service disruption due to resource exhaustion.
Potential Impact
The impact is limited to denial of service (availability) caused by resource exhaustion when processing malicious compressed-RTF data. There is no impact on confidentiality or integrity according to the CVSS vector and description.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the current data. Users should monitor vendor communications for updates and consider applying any forthcoming patches for versions before 1.6.17 and 1.7.2. Until a patch is available, limiting exposure to untrusted compressed-RTF data may reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-07-14T15:46:28.729Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a56617068715ace43d27051
Added to database: 07/14/2026, 16:18:56 UTC
Last enriched: 07/21/2026, 19:40:14 UTC
Last updated: 08/24/2026, 10:52:10 UTC
Views: 114
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