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CVE-2018-18809

From Exploited flaws, HARD’s guide to the flaws being used in attacks · Checked
This article is about a flaw in TIBCO JasperReports. For every flaw being used in attacks, see Exploited flaws.

CVE-2018-18809 is a security flaw in TIBCO JasperReports. Attackers can read files on TIBCO JasperReports that should be out of reach. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 29 Dec 2022.[1]

TIBCO JasperReports is business software or equipment. Most families won’t have it, but attackers break into it to get inside companies, and from there to what those companies hold about their customers, patients and staff. TIBCO has published a fix or advice.

Description

CISA calls it a library directory traversal in TIBCO JasperReports. In its words: “TIBCO JasperReports Library contains a directory-traversal vulnerability that may allow web server users to access contents of the host system.”[1]

The CVE record adds: “The default server implementation of TIBCO Software Inc.'s TIBCO JasperReports Library, TIBCO JasperReports Library Community Edition, TIBCO JasperReports Library for ActiveMatrix BPM, TIBCO JasperReports Server, TIBCO JasperReports Server Community Edition, TIBCO JasperReports Server for ActiveMatrix BPM, TIBCO Jaspersoft for AWS with Multi-Tenancy, and TIBCO Jaspersoft Reporting and Analytics for AWS contains a directory-traversal vulnerability that may theoretically allow web server users to access contents of the host system. Affected releases are TIBCO Software Inc.'s TIBCO JasperReports Library: versions up to and including 6.3.4; 6.4.1; 6.4.2; 6.4.21; 7.1.0; 7.2.0, TIBCO JasperReports Library Community Edition: versions up to and including 6.7.0, TIBCO JasperReports Library for ActiveMatrix BPM: versions up to and including 6.4.21, TIBCO JasperReports Server:…”[2]

The underlying weakness is path traversal (CWE-22), in MITRE’s list of common software weaknesses.

It scores 6.5 out of 10 on the Common Vulnerability Scoring System, which rates it medium, scored by NVD using CVSS 3.1.[2]

Affected versions

NVD’s record doesn’t list version ranges for it; TIBCO’s advisory has them[3]. CISA names the product as TIBCO JasperReports.

Most families won’t have TIBCO JasperReports; it’s for whoever looks after IT at work.

Exploitation

CISA added it to its catalog of known exploited vulnerabilities on 29 Dec 2022, 1,393 days after it was made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 19 Jan 2023 to fix it.[1]

FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at 79%. That’s in the top 1% of the flaws it scores.[4]

CISA assesses it as not automatable: each attack takes some work.

CISA doesn’t say who was attacked, or how.

Fix

TIBCO has published a fix or advice.[3] CISA’s required action: “Apply updates per vendor instructions.”[1]

  1. Check whether you use it.TIBCO JasperReports is business software or equipment, so most families won’t have it. If you run a business, or work from home on company equipment, ask whoever looks after your IT.
  2. Send this page to your IT person.Ask them to confirm it’s fixed, or not in use. CISA gave US government agencies until 19 Jan 2023 to fix it.
  3. If it can’t be fixed, take it offline.CISA’s advice when there’s no fix is to stop using the product, or take it off the internet, until there is one.

You can’t fix someone else’s server, but you can watch for what follows a break-in like this: a breach notice, a password reset you didn’t ask for, or a scam message that knows things it shouldn’t. HARD watches for those for you and your family.

Timeline

DateEvent
The flaw is made public in the National Vulnerability Database, with a severity score of 6.5.[2]
CISA adds it to its catalog of flaws known to be used in attacks.[1]
CISA’s deadline for US government agencies to fix it.[1]
FIRST puts the odds of it being used in attacks in the next 30 days at 79%.[4]

See also

Other TIBCO JasperReports flaws

Other path traversal flaws

  • CVE-2025-61624, Fortinet products: path traversal ·
  • CVE-2021-3199, ONLYOFFICE Docs: server path traversal ·
  • CVE-2026-104286, Fortinet FortiMail: path traversal ·
  • CVE-2026-93616, Check Point products: path traversal ·
  • CVE-2026-66384, JFrog Artifactory: improper limitation of a pathname to a restricted directory ·

Added the same day

  • CVE-2018-5430, TIBCO JasperReports: server information disclosure ·

References

  1. ^ Cybersecurity and Infrastructure Security Agency. “TIBCO JasperReports Library Directory Traversal Vulnerability”. Known Exploited Vulnerabilities Catalog, added 29 Dec 2022.
  2. ^ National Institute of Standards and Technology. “CVE-2018-18809 Detail”. National Vulnerability Database, published 7 Mar 2019.
  3. ^ TIBCO. Advisories and fixes: tibco.com.
  4. ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.791, percentile 99.6, 31 Oct 2026.
  5. CVE Program. “CVE-2018-18809”. The official CVE record.

This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.