How severe is CVE-2018-1000814?

CVE-2018-1000814 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2018-1000814 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1000814?

CVE-2018-1000814 affects Aio-libs Aiohttp Session. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1000814?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-1000814 published?

CVE-2018-1000814 was published on 2018-12-20 and last updated on 2026-06-17.

CVE-2018-1000814

CVE-2018-1000814 is a medium-severity vulnerability in Aio-libs Aiohttp Session with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-613.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-613
Affected product: Aio-libs Aiohttp Session
Published: 2018-12-20
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2018-1000814?: 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.
How severe is CVE-2018-1000814?: CVE-2018-1000814 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2018-1000814 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1000814?: CVE-2018-1000814 affects Aio-libs Aiohttp Session. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1000814?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-1000814 published?: CVE-2018-1000814 was published on 2018-12-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:aio-libs:aiohttp_session:*:*:*:*:*:*:*:*

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