CVE-2026-79313
webpy web.py 0.76 is vulnerable to Insufficient Session Expiration. The application's session...
webpy web.py 0.76 is vulnerable to Insufficient Session Expiration. The application's session management relies on periodic cleanup to expire sessions instead of checking the last-access time when a session is loaded. As a result, an expired session whose record has not yet been cleaned up can still be replayed and used, allowing an attacker holding a previously valid session cookie to continue accessing protected resources after the configured idle timeout.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
9.8
webpy web.py 0.76 is vulnerable to Insufficient Session Expiration. The application's session management relies on periodic cleanup to expire sessions instead of checking the last-access time when a session is loaded. As a result, an expired session whose record has not yet been cleaned up can still be replayed and used, allowing an attacker holding a previously valid session cookie to continue accessing protected resources after the configured idle timeout.
- Record
CVE-2026-79313- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-613
- Updated
- 2026-11-02
EUVDEUVD-2026-84490
9.8
webpy web.py 0.76 is vulnerable to Insufficient Session Expiration. The application's session management relies on periodic cleanup to expire sessions instead of checking the last-access time when a session is loaded. As a result, an expired session whose record has not yet been cleaned up can still be replayed and used, allowing an attacker holding a previously valid session cookie to continue accessing protected resources after the configured idle timeout.
- Record
EUVD-2026-84490- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-qxcc-j254-vh2v
9.8
webpy web.py 0.76 is vulnerable to Insufficient Session Expiration. The application's session...
webpy web.py 0.76 is vulnerable to Insufficient Session Expiration. The application's session management relies on periodic cleanup to expire sessions instead of checking the last-access time when a session is loaded. As a result, an expired session whose record has not yet been cleaned up can still be replayed and used, allowing an attacker holding a previously valid session cookie to continue accessing protected resources after the configured idle timeout.
- Record
GHSA-qxcc-j254-vh2v- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-613
- Updated
- 2026-11-02
NVD
9.8
webpy web.py 0.76 is vulnerable to Insufficient Session Expiration. The application's session management relies on periodic cleanup to expire sessions instead of checking the last-access time when a session is loaded. As a result, an expired session whose record has not yet been cleaned up can still be replayed and used, allowing an attacker holding a previously valid session cookie to continue accessing protected resources after the configured idle timeout.
- Record
CVE-2026-79313- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-613
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-79313
9.8
webpy web.py 0.76 is vulnerable to Insufficient Session Expiration. The application's session management relies on periodic cleanup to expire sessions instead of checking the last-access time when a session is loaded. As a result, an expired session whose record has not yet been cleaned up can still be replayed and used, allowing an attacker holding a previously valid session cookie to continue accessing protected resources after the configured idle timeout.
- Record
DEBIAN-CVE-2026-79313- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-79313
9.8
webpy web.py 0.76 is vulnerable to Insufficient Session Expiration. The application's session management relies on periodic cleanup to expire sessions instead of checking the last-access time when a session is loaded. As a result, an expired session whose record has not yet been cleaned up can still be replayed and used, allowing an attacker holding a previously valid session cookie to continue accessing protected resources after the configured idle timeout.
- Record
UBUNTU-CVE-2026-79313- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
webpyDebian:12 |
All versions, plus listed versions 1:0.62-41:0.62-4+deb12u11:0.62-51:0.62-61:0.70-11:0.76-1 |
None known |
webpyDebian:13 |
All versions, plus listed versions 1:0.62-61:0.70-11:0.76-1 |
None known |
webpyDebian:14 |
All versions, plus listed versions 1:0.62-61:0.70-11:0.76-1 |
None known |
webpyUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 1:0.37+20120626-11:0.37+20120626-1ubuntu0.1~esm1 |
None known |
webpyUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 1:0.38-11:0.38+20170615-11:0.38+20170615-1ubuntu0.1~esm1 |
None known |
webpyUbuntu:Pro:20.04:LTS |
All versions, plus listed versions 1:0.39+20181101-11:0.40-21:0.40-2ubuntu0.1~esm1 |
None known |
webpyUbuntu:Pro:22.04:LTS |
All versions, plus listed versions 1:0.61-11:0.61-1ubuntu0.1~esm1 |
None known |
webpyUbuntu:Pro:24.04:LTS |
All versions, plus listed versions 1:0.62-41:0.62-4ubuntu0.1~esm1 |
None known |
webpyUbuntu:26.10 |
All versions, plus listed versions 1:0.62-61:0.70-11:0.76-1 |
None known |
webpyUbuntu:26.04:LTS |
All versions, plus listed versions 1:0.62-6 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-79313 is a critical vulnerability (CVSS 9.8) in webpy, published September 22, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.38%, the 32nd percentile. No source names a fixed version.