CVE-2018-1000814 json
aiohttp-session creates non-expiring sessions
published 2018-12-20 7 y ago modified 2026-06-17 4 mo ago also GHSA-mr4x-c4v9-x729 , PYSEC-2018-35 , EUVD-2018-0001
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
aio-libs aiohttp-session version 2.6.0 and earlier contains a Other/Unknown vulnerability in EncryptedCookieStorage and NaClCookieStorage that can result in Non-expiring sessions / Infinite lifespan. This attack appear to be exploitable via Recreation of a cookie post-expiry with the same value.
Patch / fix
- pypi aiohttp-session 2.7.0
- github.com/aio-libs/aiohttp-session@1b356f0 commit
- github.com/aio-libs/aiohttp-session#331 pull request
Exploit prediction
0.97% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/aio-libs/aiohttp-session/issues/325 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:P/A:N |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | aiohttp-session | <2.7.0 |
2.7.0 |
Classification
- Weakness
-
- CWE-613 DEPRECATED: Insufficient Session Expiration
References
-
github.com
/aio-libs/aiohttp-session/pull/331
web, patch, third-party-advisory
-
github.com
/aio-libs/aiohttp-session/commit/1b356f01bbab57d041c9a75bacd72fbbf8524728
web
-
github.com
/aio-libs/aiohttp-session/issues/325
web, exploit, third-party-advisory, report
-
nvd.nist.gov
/vuln/detail/CVE-2018-1000814
advisory
-
github.com
/advisories/GHSA-mr4x-c4v9-x729
advisory
-
github.com
/aio-libs/aiohttp-session
package
-
github.com
/pypa/advisory-database/tree/main/vulns/aiohttp-session/PYSEC-2018-35.yaml
web
Sources
- CVE List CVE-2018-1000814
- GitHub Advisory GHSA-mr4x-c4v9-x729
- NVD CVE-2018-1000814
- OSV PYSEC-2018-35
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.