CVE-2018-11386

mediumpriority · track · 25EPSS 0.016 · 75 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.58% (75th) EPSS

CVSS 4.3 · medium

Is it mine?

25 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

An issue was discovered in the HttpFoundation component in Symfony 2.7.x before 2.7.48, 2.8.x before 2.8.41, 3.3.x before 3.3.17, 3.4.x before 3.4.11, and 4.0.x before 4.0.11. The PDOSessionHandler class allows storing sessions on a PDO connection. Under some configurations and with a well-crafted payload, it was possible to do a denial of service on a Symfony application without too much resources.

cvss

Technical severity, 0–10. One row per scoring source.

5.9

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.05.9mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 2.2 · impact 3.6

v3.05.9mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.05.4mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.15.9mediumAV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-613USprimaryCWE-613USCWE-613US

affected products (25)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Fedora Project Fedora≤ 28fstec_bduRU
SensioLabs, symfony community Symfony2.7.0 → 2.7.48fstec_bduRU
SensioLabs, symfony community Symfony2.8.0 → 2.8.41fstec_bduRU
SensioLabs, symfony community Symfony3.3.0 → 3.3.17fstec_bduRU
SensioLabs, symfony community Symfony3.4.0 → 3.4.11fstec_bduRU
SensioLabs, symfony community Symfony4.0.0 → 4.0.11fstec_bduRU
ООО «РусБИТех-Астра» Astra Linux Special Edition≤ 1.6 «Смоленск»fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 9fstec_bduRU
debian debian linux= 9.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
sensiolabs symfony2.7.0 → 2.7.48nvdUScpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
sensiolabs symfony2.8.0 → 2.8.41nvdUScpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
sensiolabs symfony3.3.0 → 3.3.17nvdUScpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
sensiolabs symfony3.4.0 → 3.4.11nvdUScpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
sensiolabs symfony4.0.0 → 4.0.11nvdUScpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
Packagist symfony/http-foundation2.7.0 → 2.7.48osvUSpkg:composer/symfony/http-foundation
Packagist symfony/http-foundation2.8.0 → 2.8.41osvUSpkg:composer/symfony/http-foundation
Packagist symfony/http-foundation3.3.0 → 3.3.17osvUSpkg:composer/symfony/http-foundation
Packagist symfony/http-foundation3.4.0 → 3.4.11osvUSpkg:composer/symfony/http-foundation
Packagist symfony/http-foundation4.0.0 → 4.0.11osvUSpkg:composer/symfony/http-foundation

showing 20 of 25

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-r2rq-3h56-fqm4Symfony DoS2022-05-14ghsa · osvUS
An issue was discovered in the HttpFoundation component in Symfony 2.7.x before 2.7.48, 2.8.x before 2.8.41, 3.3.x before 3.3.17, 3.4.x before 3.4.11, and 4.0.x before 4.0.11. The PDOSessionHandler class allows storing sessions on a PDO connection. Under some configurations and with a well-crafted payload, it was possible to do a denial of service on a Symfony application without too much resources.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd osv NVD CVE.org MITRE

published 2018-06-13modified 2026-06-17

related (733)

Related entries.

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An issue was discovered in dnaTools dnaLIMS 4-2015s13. dnaLIMS is vulnerable to session hijacking by guessing the UID parameter.

+728 more

references (15)

External citations — patches, advisories, analysis.

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