CVE-2018-19277

mediumpriority · attend · 48EPSS 0.078 · 95 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

7.79% (95th) EPSS

CVSS 6.8 · medium

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

securityScan() in PHPOffice PhpSpreadsheet through 1.5.0 allows a bypass of protection mechanisms for XXE via UTF-7 encoding in a .xlsx file

cvss

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

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–8.8

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · OSV

v3.18.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-91USprimaryCWE-91US

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-46050PhpSpreadsheet < 1.5.0 - XML External Entity (XXE)PoC · exploit_db

affected products (4)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
phpoffice phpspreadsheet≤ 1.5.0nvdUScpe:2.3:a:phpoffice:phpspreadsheet:*:*:*:*:*:*:*:*
Packagist phpoffice/phpexcel< 1.8.2osvUSpkg:composer/phpoffice/phpexcel
Packagist phpoffice/phpspreadsheet< 1.5.1osvUSpkg:composer/phpoffice/phpspreadsheet

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-xcrg-29h7-h4cjXXE in PHPSpreadsheet due to encoding issue2019-11-20ghsa · osvUS
securityScan() in PHPOffice PhpSpreadsheet through 1.5.0 allows a bypass of protection mechanisms for XXE via UTF-7 encoding in a .xlsx file

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2018-11-14modified 2026-06-17

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+197 more

references (13)

External citations — patches, advisories, analysis.

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