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CVE-2018-1000519

20
FAUCET Score

CVE-2018-1000519 is a Session Fixation vulnerability affecting aio-libs aiohttp-session, specifically within the load_session function of its RedisStorage component. This medium-severity vulnerability (CVSS 6.5) can lead to Session Hijacking, exploitable by an attacker who can manipulate session cookies. While the attack complexity is low and requires user interaction, it can result in high impact to integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.4.0CPE matchmatch criteria
cpe:2.3:a:aio-libs:aiohttp_session:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.18%
Probability of exploitation in next 30 days
EPSS Percentile
64.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0118 is in the 77th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: aiohttp-sessionFixed in: 2.4.0

Vendor Advisories (1)

pipGHSA-fpwp-69xv-c67fhigh

aiohttp-session Session Fixation vulnerability

Sep 13, 2018

References

github.com / aio-libs/aiohttp-session/blob/master/aiohttp_session/redis_storage.py
Third Party Advisory
github.com / aio-libs/aiohttp-session/issues/272
ExploitThird Party Advisory